diff --git a/include/utils.h b/include/utils.h
index 740b4fc..cf05266 100644
--- a/include/utils.h
+++ b/include/utils.h
@@ -14,24 +14,30 @@
 class InterpretException : public std::exception {
  public:
   InterpretException() {}
-  InterpretException(const char *message) : m_message(message) {}
+  InterpretException(const char *__message, int __code)
+      : message(__message), code(__code) {}
 
-  const char *what() const noexcept override { return m_message; }
+  const char *what() const noexcept override { return message.c_str(); }
+  const int GetCode() const noexcept { return code; }
 
   ~InterpretException() noexcept override {}
 
  private:
-  const char *m_message;
+  std::string message;
+  int code;
 };
 
 class FatalError : public std::exception {
  public:
-  FatalError(const char *message) : m_message(message) {}
+  FatalError(const char *__message, int __code)
+      : message(__message), code(__code) {}
 
-  const char *what() const noexcept override { return m_message; }
+  const char *what() const noexcept override { return message.c_str(); }
+  const int GetCode() const noexcept { return code; }
 
  private:
-  const char *m_message;
+  std::string message;
+  int code;
 };
 enum FlowControlStatusType { BREAK, CONTINUE, RETURN };
 struct FlowType {
diff --git a/src/Evalvisitor.cpp b/src/Evalvisitor.cpp
index 944dceb..568bd0e 100644
--- a/src/Evalvisitor.cpp
+++ b/src/Evalvisitor.cpp
@@ -80,7 +80,8 @@ std::any EvalVisitor::visitExpr_stmt(Python3Parser::Expr_stmtContext *ctx) {
     if (!ptr_var && !ptr_vec)
       throw InterpretException(
           "visitExpr_stmt: Expect left value or tuple at the left of "
-          "augassign");
+          "augassign",
+          1);
     if (ptr_var) {
       std::any old_val = DeQuate(*ptr_var, Variables);
       if (ctx->augassign()->ADD_ASSIGN())
@@ -96,17 +97,17 @@ std::any EvalVisitor::visitExpr_stmt(Python3Parser::Expr_stmtContext *ctx) {
       else if (ctx->augassign()->MOD_ASSIGN())
         SelfMod(old_val, right_value);
       else
-        throw FatalError("visitExpr_stmt: Unknown operator at augassign");
+        throw FatalError("visitExpr_stmt: Unknown operator at augassign", 2);
       Variables.WriteVariable(ptr_var->name, old_val);
     } else {
       if (ptr_vec->size() !=
           std::any_cast<std::vector<std::any>>(right_value).size())
-        throw InterpretException("visitExpr_stmt: Tuple size not match");
+        throw InterpretException("visitExpr_stmt: Tuple size not match", 3);
       for (int i = 0; i < ptr_vec->size(); i++) {
         ptr_var = std::any_cast<RawVarible>(&(*ptr_vec)[i]);
         if (!ptr_var)
           throw InterpretException(
-              "visitExpr_stmt: Expect left value at the left of augassign");
+              "visitExpr_stmt: Expect left value at the left of augassign", 4);
         std::any old_val = DeQuate(*ptr_var, Variables);
         if (ctx->augassign()->ADD_ASSIGN())
           SelfAdd(old_val,
@@ -127,7 +128,7 @@ std::any EvalVisitor::visitExpr_stmt(Python3Parser::Expr_stmtContext *ctx) {
           SelfMod(old_val,
                   std::any_cast<std::vector<std::any>>(right_value)[i]);
         else
-          throw FatalError("visitExpr_stmt: Unknown operator at augassign");
+          throw FatalError("visitExpr_stmt: Unknown operator at augassign", 5);
         Variables.WriteVariable(ptr_var->name, old_val);
       }
     }
@@ -146,31 +147,32 @@ std::any EvalVisitor::visitExpr_stmt(Python3Parser::Expr_stmtContext *ctx) {
     else if (ptr_dest_tuple) {
       if (ptr_dest_tuple->size() !=
           std::any_cast<std::vector<std::any>>(val).size())
-        throw InterpretException("visitExpr_stmt: Tuple size not match");
+        throw InterpretException("visitExpr_stmt: Tuple size not match", 6);
       for (int j = 0; j < ptr_dest_tuple->size(); j++) {
         ptr_dest_single = std::any_cast<RawVarible>(&(*ptr_dest_tuple)[j]);
         if (!ptr_dest_single)
           throw InterpretException(
-              "visitExpr_stmt: Expect left value at the left of assign");
+              "visitExpr_stmt: Expect left value at the left of assign", 7);
         Variables.WriteVariable(ptr_dest_single->name,
                                 std::any_cast<std::vector<std::any>>(val)[j]);
       }
     } else
       throw InterpretException(
-          "visitExpr_stmt: Expect left value or tuple at the left of assign");
+          "visitExpr_stmt: Expect left value or tuple at the left of assign",
+          8);
   }
   return NoneType();
 }
 
 std::any EvalVisitor::visitAugassign(Python3Parser::AugassignContext *ctx) {
-  throw FatalError("Function visitAugassign Shouldn't be called");
+  throw FatalError("Function visitAugassign Shouldn't be called", 9);
 }
 
 std::any EvalVisitor::visitFlow_stmt(Python3Parser::Flow_stmtContext *ctx) {
   if (ctx->break_stmt()) return visitBreak_stmt(ctx->break_stmt());
   if (ctx->continue_stmt()) return visitContinue_stmt(ctx->continue_stmt());
   if (ctx->return_stmt()) return visitReturn_stmt(ctx->return_stmt());
-  throw FatalError("Unknown flow statement");
+  throw FatalError("Unknown flow statement", 10);
   return NoneType();
 }
 
@@ -200,7 +202,7 @@ std::any EvalVisitor::visitCompound_stmt(
   if (ctx->if_stmt()) return visitIf_stmt(ctx->if_stmt());
   if (ctx->while_stmt()) return visitWhile_stmt(ctx->while_stmt());
   if (ctx->funcdef()) return visitFuncdef(ctx->funcdef());
-  throw FatalError("Unknown compound statement");
+  throw FatalError("Unknown compound statement", 11);
   return NoneType();
 }
 
@@ -209,7 +211,7 @@ std::any EvalVisitor::visitIf_stmt(Python3Parser::If_stmtContext *ctx) {
   auto suite_list = ctx->suite();
   if (test_list.size() - suite_list.size() != -1 &&
       test_list.size() - suite_list.size() != 0)
-    throw InterpretException("test and suite doesn't match in If_stmt");
+    throw InterpretException("test and suite doesn't match in If_stmt", 12);
   for (int i = 0; i < test_list.size(); i++)
     if (Any2Bool(DeQuate(visitTest(test_list[i]), Variables)))
       return visitSuite(suite_list[i]);
@@ -303,7 +305,7 @@ std::any EvalVisitor::visitComparison(Python3Parser::ComparisonContext *ctx) {
     else if (op_list[i]->LT_EQ())
       ok = LessEqual(last_val, cur);
     else
-      throw InterpretException("visitComparison: Unknown operator");
+      throw InterpretException("visitComparison: Unknown operator", 13);
     if (!ok) return false;
     last_val = cur;
   }
@@ -311,7 +313,7 @@ std::any EvalVisitor::visitComparison(Python3Parser::ComparisonContext *ctx) {
 }
 
 std::any EvalVisitor::visitComp_op(Python3Parser::Comp_opContext *ctx) {
-  throw FatalError("Function visitComp_op Shouldn't be called");
+  throw FatalError("Function visitComp_op Shouldn't be called", 14);
 }
 
 std::any EvalVisitor::visitArith_expr(Python3Parser::Arith_exprContext *ctx) {
@@ -328,13 +330,13 @@ std::any EvalVisitor::visitArith_expr(Python3Parser::Arith_exprContext *ctx) {
     else if (op_list[i]->MINUS())
       SelfSub(ans, cur);
     else
-      throw FatalError("visitArith_expr: Unknown operator");
+      throw FatalError("visitArith_expr: Unknown operator", 15);
   }
   return ans;
 }
 
 std::any EvalVisitor::visitAddorsub_op(Python3Parser::Addorsub_opContext *ctx) {
-  throw FatalError("Function visitAddorsub_op Shouldn't be called");
+  throw FatalError("Function visitAddorsub_op Shouldn't be called", 16);
 }
 
 std::any EvalVisitor::visitTerm(Python3Parser::TermContext *ctx) {
@@ -355,14 +357,14 @@ std::any EvalVisitor::visitTerm(Python3Parser::TermContext *ctx) {
     else if (op_list[i]->MOD())
       SelfMod(ans, cur);
     else
-      throw FatalError("visitTerm: Unknown operator");
+      throw FatalError("visitTerm: Unknown operator", 17);
   }
   return ans;
 }
 
 std::any EvalVisitor::visitMuldivmod_op(
     Python3Parser::Muldivmod_opContext *ctx) {
-  throw FatalError("Function visitMuldivmod_op Shouldn't be called");
+  throw FatalError("Function visitMuldivmod_op Shouldn't be called", 18);
 }
 
 std::any EvalVisitor::visitFactor(Python3Parser::FactorContext *ctx) {
@@ -399,7 +401,7 @@ std::any EvalVisitor::visitArglist(Python3Parser::ArglistContext *ctx) {
 std::any EvalVisitor::visitArgument(Python3Parser::ArgumentContext *ctx) {
   auto arg_list = ctx->test();
   if (arg_list.size() != 1 && arg_list.size() != 2)
-    throw FatalError("visitArgument: arg_list.size()!=1&&arg_list!=2");
+    throw FatalError("visitArgument: arg_list.size()!=1&&arg_list!=2", 19);
   if (arg_list.size() == 1)
     return ParaArguItemType("", DeQuate(visitTest(arg_list[0]), Variables));
   else
diff --git a/src/main.cpp b/src/main.cpp
index cecdff2..077c337 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,34 +1,32 @@
+#include <iostream>
+
 #include "Evalvisitor.h"
 #include "Python3Lexer.h"
 #include "Python3Parser.h"
 #include "antlr4-runtime.h"
-#include <iostream>
 #include "clipp/clipp.h"
 using namespace antlr4;
 // TODO: regenerating files in directory named "generated" is dangerous.
 //       if you really need to regenerate,please ask TA for help.
-int main(int argc, char *argv[])
-{
-  // TODO: please don't modify the code below the construction of ifs if you want to use visitor mode
+int main(int argc, char *argv[]) {
+  // TODO: please don't modify the code below the construction of ifs if you
+  // want to use visitor mode
   std::string input_file;
   bool need_help = false;
   auto cli = (clipp::option("-h", "--help").set(need_help).doc("show help") |
               clipp::opt_value("input file", input_file));
-  if (!clipp::parse(argc, argv, cli))
-  {
+  if (!clipp::parse(argc, argv, cli)) {
     std::cout << clipp::make_man_page(cli, argv[0]);
     return 0;
   }
-  if (need_help)
-  {
+  if (need_help) {
     std::cout << clipp::make_man_page(cli, argv[0]);
     return 0;
   }
   ANTLRInputStream *input_p;
   if (input_file.length() == 0)
     input_p = new ANTLRInputStream(std::cin);
-  else
-  {
+  else {
     std::ifstream ifs(input_file);
     input_p = new ANTLRInputStream(ifs);
   }
@@ -38,25 +36,22 @@ int main(int argc, char *argv[])
   Python3Parser parser(&tokens);
   tree::ParseTree *tree = parser.file_input();
   EvalVisitor visitor;
-  try
-  {
+  try {
     visitor.visit(tree);
-  }
-  catch (const InterpretException &e)
-  {
+  } catch (const InterpretException &e) {
     std::cerr << "[Interpret Error] " << e.what() << std::endl;
-  }
-  catch (const FatalError &e)
-  {
-    std::cerr << "\e[7m\e[31m[Fatal Error] " << e.what() << "\e[0m" << std::endl;
-  }
-  catch (const std::exception &e)
-  {
-    std::cerr << "\e[7m\e[31m[other std::exception] " << e.what() << "\e[0m" << std::endl;
-  }
-  catch (...)
-  {
+    return e.GetCode();
+  } catch (const FatalError &e) {
+    std::cerr << "\e[7m\e[31m[Fatal Error] " << e.what() << "\e[0m"
+              << std::endl;
+    return e.GetCode();
+  } catch (const std::exception &e) {
+    std::cerr << "\e[7m\e[31m[other std::exception] " << e.what() << "\e[0m"
+              << std::endl;
+    return 255;
+  } catch (...) {
     std::cerr << "\e[7m\e[31m[Unknown Exception]\e[0m" << std::endl;
+    return 255;
   }
   delete input_p;
   return 0;
diff --git a/src/names.cpp b/src/names.cpp
index 3d43018..1ca32da 100644
--- a/src/names.cpp
+++ b/src/names.cpp
@@ -6,7 +6,7 @@ inline void VariableContainer::CreateFrame() {
   StackScopes.push(std::unordered_map<std::string, std::any>());
 }
 void VariableContainer::DestroyFrame() {
-  if (StackScopes.empty()) throw FatalError("DestroyFrame: empty stack");
+  if (StackScopes.empty()) throw FatalError("DestroyFrame: empty stack", 20);
   StackScopes.pop();
 }
 std::any VariableContainer::ReadVariable(const std::string &name) {
@@ -15,7 +15,7 @@ std::any VariableContainer::ReadVariable(const std::string &name) {
     if (top.find(name) != top.end()) return top[name];
   }
   if (GlobalScope.find(name) != GlobalScope.end()) return GlobalScope[name];
-  throw InterpretException(("ReadVariable: not found"));
+  throw InterpretException(("ReadVariable: not found"), 21);
 }
 void VariableContainer::WriteVariable(const std::string &name,
                                       const std::any &value, bool cover) {
@@ -41,7 +41,7 @@ void VariableContainer::WriteVariable(const std::string &name,
 void FucntionContainer::AddFunction(const std::string &name,
                                     const FunctionItem &item) {
   if (FunctionIndex.find(name) != FunctionIndex.end()) {
-    throw InterpretException("AddFunction: function already exists");
+    throw InterpretException("AddFunction: function already exists", 22);
   }
   FunctionIndex[name] = item;
 }
@@ -66,32 +66,32 @@ std::any FucntionContainer::CallFunction(const std::string &name,
   } else if (name == "str") {
     if (args.size() != 1)
       throw InterpretException(
-          "CallFunction: str() should take exactly one argument");
+          "CallFunction: str() should take exactly one argument", 23);
     return Any2String(args[0].value);
   } else if (name == "int") {
     if (args.size() == 1) {
       return Any2Int(args[0].value);
     } else {
       throw InterpretException(
-          "CallFunction: int() should take exactly one argument");
+          "CallFunction: int() should take exactly one argument", 24);
     }
   } else if (name == "float") {
     if (args.size() == 1) {
       return Any2Float(args[0].value);
     } else {
       throw InterpretException(
-          "CallFunction: float() should take exactly one argument");
+          "CallFunction: float() should take exactly one argument", 25);
     }
   } else if (name == "bool") {
     if (args.size() == 1) {
       return Any2Bool(args[0].value);
     } else {
       throw InterpretException(
-          "CallFunction: bool() should take exactly one argument");
+          "CallFunction: bool() should take exactly one argument", 26);
     }
   }
   if (FunctionIndex.find(name) == FunctionIndex.end()) {
-    throw InterpretException("CallFunction: function not found");
+    throw InterpretException("CallFunction: function not found", 27);
   }
   const FunctionItem &func = FunctionIndex[name];
   std::unordered_set<std::string> args_with_data;
@@ -121,7 +121,8 @@ std::any FucntionContainer::CallFunction(const std::string &name,
       i++;
     if (i >= func.para_list.size()) break;
     if (!func.para_list[i].value.has_value())
-      throw InterpretException("CallFunction: function parameter not found");
+      throw InterpretException("CallFunction: function parameter not found",
+                               28);
     Variables.WriteVariable(func.para_list[i].name, func.para_list[i].value,
                             true);
     args_with_data.insert(func.para_list[i].name);
diff --git a/src/utils.cpp b/src/utils.cpp
index 376d6ff..6da525b 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -25,7 +25,7 @@ inline ZYM::int2048 Any2Int(const std::any &value) {
     return std::move(ZYM::int2048(0));
   else {
     std::cerr << value.type().name() << std::endl;
-    throw FatalError("Any2Int2048: unknown type");
+    throw FatalError("Any2Int2048: unknown type", 29);
   }
 }
 
@@ -48,7 +48,7 @@ double Any2Float(const std::any &value) {
   else if (auto ptr = std::any_cast<std::string>(&value))
     return std::stod(*ptr);
   else
-    throw FatalError("Any2Float: unknown type");
+    throw FatalError("Any2Float: unknown type", 30);
 }
 
 std::string Any2String(const std::any &value) {
@@ -68,7 +68,7 @@ std::string Any2String(const std::any &value) {
   else if (auto ptr = std::any_cast<NoneType>(&value))
     buf << "None";
   else
-    throw FatalError("Any2String: unknown type");
+    throw FatalError("Any2String: unknown type", 31);
   std::getline(buf, res);
   return res;
 }
@@ -83,7 +83,7 @@ bool Any2Bool(const std::any &value) {
   } else if (auto ptr = std::any_cast<std::string>(&value)) {
     return (*ptr) != "";
   } else
-    throw FatalError("Any2Bool: unknown type");
+    throw FatalError("Any2Bool: unknown type", 32);
 }
 
 std::any DeQuate(std::any val, VariableContainer &Variables) {
@@ -115,16 +115,19 @@ int ConverToSameArithType(std::any &a, std::any &b,
   if ((!allow_string_operation) && (ptr_a_string || ptr_b_string))
     throw InterpretException(
         "ConverToSameArithType: string operation not allowed in this "
-        "situation");
+        "situation",
+        33);
   if (allow_string_operation && (ptr_a_string || ptr_b_string)) {
     if (!(ptr_a_string || ptr_a_int2048))
       throw InterpretException(
           "ConverToSameArithType: string operation not allowed in this "
-          "situation");
+          "situation",
+          34);
     if (!(ptr_b_string || ptr_b_int2048))
       throw InterpretException(
           "ConverToSameArithType: string operation not allowed in this "
-          "situation");
+          "situation",
+          35);
     return 1;
   }
   int level_a = (ptr_a_bool != nullptr ? 1 : 0) +
@@ -146,7 +149,7 @@ int ConverToSameArithType(std::any &a, std::any &b,
       b = Any2Float(b);
       break;
     default:
-      throw FatalError("ConverToSameArithType: unknown type");
+      throw FatalError("ConverToSameArithType: unknown type", 36);
   }
   return 0;
 }
@@ -164,7 +167,7 @@ std::any Add(std::any a, std::any b) {
   if ((ptr_a_string != nullptr ? 1 : 0) + (ptr_b_string != nullptr ? 1 : 0) ==
       1) {
     throw InterpretException(
-        "Add: string operation not allowed in this situation");
+        "Add: string operation not allowed in this situation", 37);
   }
   if ((ptr_a_string != nullptr ? 1 : 0) + (ptr_b_string != nullptr ? 1 : 0) ==
       2)
@@ -176,7 +179,7 @@ std::any Add(std::any a, std::any b) {
   else if ((ptr_a_float != nullptr) && (ptr_b_float != nullptr))
     return (*ptr_a_float) + (*ptr_b_float);
   else
-    throw FatalError("Add: Type Error");
+    throw FatalError("Add: Type Error", 38);
 }
 std::any Sub(std::any a, std::any b) {
   ConverToSameArithType(a, b);
@@ -193,7 +196,7 @@ std::any Sub(std::any a, std::any b) {
   else if ((ptr_a_float != nullptr) && (ptr_b_float != nullptr))
     return (*ptr_a_float) - (*ptr_b_float);
   else
-    throw FatalError("Sub: Type Error");
+    throw FatalError("Sub: Type Error", 39);
   return a;
 }
 std::any Mul(std::any a, std::any b) {
@@ -209,7 +212,7 @@ std::any Mul(std::any a, std::any b) {
   if ((ptr_a_string != nullptr ? 1 : 0) + (ptr_b_string != nullptr ? 1 : 0) ==
       2) {
     throw InterpretException(
-        "Mul: string operation not allowed in this situation");
+        "Mul: string operation not allowed in this situation", 40);
   } else if ((ptr_a_string != nullptr ? 1 : 0) +
                  (ptr_b_string != nullptr ? 1 : 0) ==
              1) {
@@ -220,7 +223,7 @@ std::any Mul(std::any a, std::any b) {
       std::swap(ptr_a_float, ptr_b_float);
     }
     if (ptr_b_float != nullptr)
-      throw InterpretException("Mul: string*float not allowed");
+      throw InterpretException("Mul: string*float not allowed", 41);
     if (ptr_b_bool != nullptr) {
       if (*ptr_b_bool) {
         return *ptr_a_string;
@@ -241,7 +244,7 @@ std::any Mul(std::any a, std::any b) {
   else if ((ptr_a_float != nullptr) && (ptr_b_float != nullptr))
     return (*ptr_a_float) * (*ptr_b_float);
   else
-    throw FatalError("Mul: Type Error");
+    throw FatalError("Mul: Type Error", 42);
 }
 std::any Div(std::any a, std::any b) {
   bool *ptr_a_bool = std::any_cast<bool>(&a);
@@ -254,10 +257,10 @@ std::any Div(std::any a, std::any b) {
   std::string *ptr_b_string = std::any_cast<std::string>(&b);
   if ((ptr_a_string != nullptr) || (ptr_b_string != nullptr))
     throw InterpretException(
-        "Div: string operation not allowed in this situation");
+        "Div: string operation not allowed in this situation", 43);
   double t_a = Any2Float(a);
   double t_b = Any2Float(b);
-  if (t_b == 0) throw InterpretException("Div: divided by zero");
+  if (t_b == 0) throw InterpretException("Div: divided by zero", 44);
   t_a = t_a / t_b;
   return a;
 }
@@ -270,17 +273,19 @@ std::any Divv(std::any a, std::any b) {
   double *ptr_a_float = std::any_cast<double>(&a);
   double *ptr_b_float = std::any_cast<double>(&b);
   if ((ptr_a_float != nullptr) && (ptr_b_float != nullptr)) {
-    if ((*ptr_b_float) == 0) throw InterpretException("Divv: divided by zero");
+    if ((*ptr_b_float) == 0)
+      throw InterpretException("Divv: divided by zero", 45);
     return ZYM::int2048(std::floor((*ptr_a_float) / (*ptr_b_float)));
   } else if ((ptr_a_int2048 != nullptr) && (ptr_b_int2048 != nullptr)) {
     if ((*ptr_b_int2048) == 0)
-      throw InterpretException("Divv: divided by zero");
+      throw InterpretException("Divv: divided by zero", 46);
     return (*ptr_a_int2048) / (*ptr_b_int2048);
   } else if ((ptr_a_bool != nullptr) && (ptr_b_bool != nullptr)) {
-    if ((*ptr_b_bool) == 0) throw InterpretException("Divv: divided by zero");
+    if ((*ptr_b_bool) == 0)
+      throw InterpretException("Divv: divided by zero", 47);
     return ZYM::int2048((*ptr_a_bool) / (*ptr_b_bool));
   } else
-    throw FatalError("Divv: Type Error");
+    throw FatalError("Divv: Type Error", 48);
 }
 std::any Mod(std::any a, std::any b) {
   ConverToSameArithType(a, b);
@@ -291,18 +296,21 @@ std::any Mod(std::any a, std::any b) {
   double *ptr_a_float = std::any_cast<double>(&a);
   double *ptr_b_float = std::any_cast<double>(&b);
   if ((ptr_a_float != nullptr) && (ptr_b_float != nullptr)) {
-    if ((*ptr_b_float) == 0) throw InterpretException("Mod: divided by zero");
+    if ((*ptr_b_float) == 0)
+      throw InterpretException("Mod: divided by zero", 49);
     return ZYM::int2048((*ptr_a_float) -
                         (*ptr_b_float) *
                             std::floor((*ptr_a_float) / (*ptr_b_float)));
   } else if ((ptr_a_int2048 != nullptr) && (ptr_b_int2048 != nullptr)) {
-    if ((*ptr_b_int2048) == 0) throw InterpretException("Mod: divided by zero");
+    if ((*ptr_b_int2048) == 0)
+      throw InterpretException("Mod: divided by zero", 50);
     return (*ptr_a_int2048) % (*ptr_b_int2048);
   } else if ((ptr_a_bool != nullptr) && (ptr_b_bool != nullptr)) {
-    if ((*ptr_b_bool) == 0) throw InterpretException("Mod: divided by zero");
+    if ((*ptr_b_bool) == 0)
+      throw InterpretException("Mod: divided by zero", 51);
     return ZYM::int2048((*ptr_a_bool) % (*ptr_b_bool));
   } else
-    throw FatalError("Mod: Type Error");
+    throw FatalError("Mod: Type Error", 52);
 }
 std::any &SelfAdd(std::any &a, std::any b) {
   a = Add(a, b);
@@ -339,7 +347,7 @@ std::any Neg(std::any a) {
   else if (ptr_a_float != nullptr)
     return -(*ptr_a_float);
   else
-    throw FatalError("Neg: Type Error");
+    throw FatalError("Neg: Type Error", 53);
 }
 
 bool Greater(std::any a, std::any b) {
@@ -361,7 +369,7 @@ bool Greater(std::any a, std::any b) {
   else if ((ptr_a_string != nullptr) && (ptr_b_string != nullptr))
     return (*ptr_a_string) > (*ptr_b_string);
   else
-    throw FatalError("Greater: Type Error");
+    throw FatalError("Greater: Type Error", 54);
 }
 bool Less(std::any a, std::any b) {
   ConverToSameArithType(a, b, true);
@@ -382,7 +390,7 @@ bool Less(std::any a, std::any b) {
   else if ((ptr_a_string != nullptr) && (ptr_b_string != nullptr))
     return (*ptr_a_string) < (*ptr_b_string);
   else
-    throw FatalError("Less: Type Error");
+    throw FatalError("Less: Type Error", 55);
 }
 bool Equal(std::any a, std::any b) {
   ConverToSameArithType(a, b, true);
@@ -403,7 +411,7 @@ bool Equal(std::any a, std::any b) {
   else if ((ptr_a_string != nullptr) && (ptr_b_string != nullptr))
     return (*ptr_a_string) == (*ptr_b_string);
   else
-    throw FatalError("Equal: Type Error");
+    throw FatalError("Equal: Type Error", 56);
 }
 bool NotEqual(std::any a, std::any b) {
   ConverToSameArithType(a, b, true);
@@ -424,7 +432,7 @@ bool NotEqual(std::any a, std::any b) {
   else if ((ptr_a_string != nullptr) && (ptr_b_string != nullptr))
     return (*ptr_a_string) != (*ptr_b_string);
   else
-    throw FatalError("NotEqual: Type Error");
+    throw FatalError("NotEqual: Type Error", 57);
 }
 bool GreaterEqual(std::any a, std::any b) {
   ConverToSameArithType(a, b, true);
@@ -445,7 +453,7 @@ bool GreaterEqual(std::any a, std::any b) {
   else if ((ptr_a_string != nullptr) && (ptr_b_string != nullptr))
     return (*ptr_a_string) >= (*ptr_b_string);
   else
-    throw FatalError("GreaterEqual: Type Error");
+    throw FatalError("GreaterEqual: Type Error", 58);
 }
 bool LessEqual(std::any a, std::any b) {
   ConverToSameArithType(a, b, true);
@@ -466,5 +474,5 @@ bool LessEqual(std::any a, std::any b) {
   else if ((ptr_a_string != nullptr) && (ptr_b_string != nullptr))
     return (*ptr_a_string) <= (*ptr_b_string);
   else
-    throw FatalError("LessEqual: Type Error");
+    throw FatalError("LessEqual: Type Error", 59);
 }
\ No newline at end of file