diff --git a/src/Evalvisitor.cpp b/src/Evalvisitor.cpp
index 195bd88..7598edf 100644
--- a/src/Evalvisitor.cpp
+++ b/src/Evalvisitor.cpp
@@ -69,7 +69,7 @@ std::any EvalVisitor::visitExpr_stmt(Python3Parser::Expr_stmtContext *ctx) {
   if (ctx->augassign()) {
     auto left_value = visitTestlist(ctx->testlist(0));
     auto right_value = visitTestlist(ctx->testlist(1));
-    DeQuate(right_value, Variables);
+    right_value = DeQuate(right_value, Variables);
     RawVarible *ptr_var = std::any_cast<RawVarible>(&left_value);
     std::vector<std::any> *ptr_vec =
         std::any_cast<std::vector<std::any>>(&left_value);
@@ -245,11 +245,11 @@ std::any EvalVisitor::visitComparison(Python3Parser::ComparisonContext *ctx) {
   auto arith_expr_list = ctx->arith_expr();
   auto last_val = visitArith_expr(arith_expr_list[0]);
   if (arith_expr_list.size() == 1) return last_val;
-  DeQuate(last_val, Variables);
+  last_val = DeQuate(last_val, Variables);
   auto op_list = ctx->comp_op();
   for (int i = 0; i < op_list.size(); i++) {
     auto cur = visitArith_expr(arith_expr_list[i + 1]);
-    DeQuate(cur, Variables);
+    cur = DeQuate(cur, Variables);
     bool ok = false;
     if (op_list[i]->GREATER_THAN())
       ok = Greater(last_val, cur);
@@ -280,10 +280,10 @@ std::any EvalVisitor::visitArith_expr(Python3Parser::Arith_exprContext *ctx) {
   auto ans = visitTerm(term_list[0]);
   if (term_list.size() == 1) return ans;
   auto op_list = ctx->addorsub_op();
-  DeQuate(ans, Variables);
+  ans = DeQuate(ans, Variables);
   for (int i = 0; i < op_list.size(); i++) {
     auto cur = visitTerm(term_list[i + 1]);
-    DeQuate(cur, Variables);
+    cur = DeQuate(cur, Variables);
     if (op_list[i]->ADD())
       SelfAdd(ans, cur);
     else if (op_list[i]->MINUS())
@@ -303,10 +303,10 @@ std::any EvalVisitor::visitTerm(Python3Parser::TermContext *ctx) {
   auto ans = visitFactor(factor_list[0]);
   if (factor_list.size() == 1) return ans;
   auto op_list = ctx->muldivmod_op();
-  DeQuate(ans, Variables);
+  ans = DeQuate(ans, Variables);
   for (int i = 0; i < op_list.size(); i++) {
     auto cur = visitFactor(factor_list[i + 1]);
-    DeQuate(cur, Variables);
+    cur = DeQuate(cur, Variables);
     if (op_list[i]->STAR())
       SelfMul(ans, cur);
     else if (op_list[i]->DIV())