diff --git a/src/Parser/Ast/ast.c b/src/Parser/Ast/ast.c
index cced5c0..cc5fb00 100644
--- a/src/Parser/Ast/ast.c
+++ b/src/Parser/Ast/ast.c
@@ -98,8 +98,8 @@ AST_function* init_ast_function(char* name, size_t length)
   ast_function->name = name;
   ast_function->name_length = length;
   ast_function->args_size = 0;
-  ast_function->codes_size = 0;
   ast_function->args = malloc(sizeof(AST));
+  ast_function->codes = malloc(sizeof(AST));
   ast_function->type = AST_FUNCTION_TYPE_NULL;
   ast_function->ast_type = AST_FUNCTION_NULL;
 
diff --git a/src/Parser/Ast/ast.h b/src/Parser/Ast/ast.h
index 26fc28d..a967ed5 100644
--- a/src/Parser/Ast/ast.h
+++ b/src/Parser/Ast/ast.h
@@ -53,10 +53,14 @@ typedef struct ast_function_t
     AST_FUNCTION_TYPE_NULL = 99
   } type;
 
-  struct ast_t** codes;   // I wonder
+  struct ast_t* codes;    // I wonder
                           //    I should use a Lexer struct
                           //    or AST struct... or Token...
-  size_t codes_size;
+                          //
+                          // When type is AST_FUNCTION_TYPE_SINGLE...
+                          //    -> codes->type is value...
+                          // When type is AST_FUNCTION_TYPE_DEFAULT...
+                          //    -> codes->type is compound...
 } AST_function;
 
 typedef struct ast_string_t
@@ -69,6 +73,8 @@ typedef struct ast_string_t
 typedef struct ast_int_t
 {
   int value;  // I should not use a pointer...??
+              // ToDo...
+              // Create a new type that unlimited length
 } AST_int;
 
 typedef struct ast_float_t
diff --git a/src/Parser/parser.c b/src/Parser/parser.c
index bfd2748..fd41287 100644
--- a/src/Parser/parser.c
+++ b/src/Parser/parser.c
@@ -11,6 +11,7 @@ GET_COMPOUND_ENV* init_get_compound_env()
   GET_COMPOUND_ENV* new_env = malloc(sizeof(GET_COMPOUND_ENV));
   new_env->is_in_parentheses = false;
   new_env->is_usefull_comma = false;
+  new_env->is_usefull_end = (void*) 0;
 
   return new_env;
 }
diff --git a/src/Parser/parser.h b/src/Parser/parser.h
index b5bf771..9c702ce 100644
--- a/src/Parser/parser.h
+++ b/src/Parser/parser.h
@@ -10,6 +10,7 @@ typedef struct get_compound_env_t
 {
   bool is_in_parentheses;
   bool is_usefull_comma;
+  char* is_usefull_end;
 } GET_COMPOUND_ENV;
 
 Parser* init_parser(Lexer* lexer);
diff --git a/src/Parser/parser_id.c b/src/Parser/parser_id.c
index 7a6e512..ab9a361 100644
--- a/src/Parser/parser_id.c
+++ b/src/Parser/parser_id.c
@@ -109,11 +109,12 @@ AST* parser_parse_function(Parser* parser, AST* ast, Token* last_token,
 
         if (value_node)
         {
-          new_ast_node->value.function_v->type = AST_FUNCTION_TYPE_SINGLE;
+          AST_function* new_ast_function = new_ast_node->value.function_v;
+          new_ast_function->type = AST_FUNCTION_TYPE_SINGLE;
 
-          new_ast_node->value.function_v->codes_size = 1;
-          new_ast_node->value.function_v->codes = malloc(sizeof(struct AST*));
-          new_ast_node->value.function_v->codes[0] = value_node;
+          new_ast_function->codes = malloc(sizeof(AST));
+
+          new_ast_function->codes = value_node;
         }
         else
         {
@@ -125,19 +126,16 @@ AST* parser_parse_function(Parser* parser, AST* ast, Token* last_token,
             AST_function* new_ast_function = new_ast_node->value.function_v;
             printf("!@#$@#!@$@#$#@$#@1223 %s\n", code);
             // For test....
-            new_ast_function->codes_size += 3;
             new_ast_function->codes = 
-              realloc(new_ast_function->codes, 
-                  new_ast_function->codes_size * sizeof(AST*));
-            for (int i = 0; i < 3; i ++)
-            {
-              printf("@@@\n");
-              GET_COMPOUND_ENV* get_function_code_env
-                = init_get_compound_env();
-              printf("222 %s\n", parser->token->value);
-              new_ast_function->codes[i] = 
-                parser_get_compound(parser, get_function_code_env);
-            }
+              realloc(new_ast_function->codes, sizeof(AST));
+
+            printf("@@@\n");
+            GET_COMPOUND_ENV* get_function_code_env
+              = init_get_compound_env();
+            printf("222 %s\n", parser->token->value);
+            new_ast_function->codes = 
+              parser_get_compound(parser, get_function_code_env);
+
             exit(1);
             // ToDo
           }
diff --git a/src/Visitor/visitor.c b/src/Visitor/visitor.c
index b195faa..e452985 100644
--- a/src/Visitor/visitor.c
+++ b/src/Visitor/visitor.c
@@ -404,7 +404,7 @@ AST_value_stack* visitor_get_value_from_function
   switch (env_function->type)
   {
     case ENV_FUNCTION_TYPE_SINGLE:
-      return visitor_get_value(new_envs, env_function->codes[0]->value.value_v);
+      return visitor_get_value(new_envs, env_function->codes->value.value_v);
       break;
   }
 
@@ -910,7 +910,6 @@ Env_function* get_deep_copy_env_funtion
   new_env_funtion->args = env_function->args;
   new_env_funtion->args_size = env_function->args_size;
   new_env_funtion->codes = env_function->codes;
-  new_env_funtion->codes_size = env_function->codes_size;
   new_env_funtion->type = env_function->type;
   new_env_funtion->next = env_function->next;
 
diff --git a/src/develop_mode.c b/src/develop_mode.c
index 84af3e0..aa5e5b0 100644
--- a/src/develop_mode.c
+++ b/src/develop_mode.c
@@ -22,11 +22,11 @@ void print_function(AST_function* checked_function)
         break;
     }
   }
-  if (checked_function->codes_size)
+  if (checked_function->codes)
   {
     printf("  ->code:\n");
-    if (checked_function->codes_size == 1)
-      print_value(checked_function->codes[0]);
+    if (checked_function->type == AST_FUNCTION_TYPE_SINGLE)
+      print_value(checked_function->codes);
   }
 }
 
diff --git a/src/env.c b/src/env.c
index a6926da..3150bac 100644
--- a/src/env.c
+++ b/src/env.c
@@ -12,7 +12,6 @@ Env_function* get_env_function_from_ast_function
   env_function->args_size = ast_function->args_size;
 
   env_function->codes = ast_function->codes;
-  env_function->codes_size = ast_function->codes_size;
 
   env_function->type = ast_function->type;
 
diff --git a/src/env.h b/src/env.h
index 0481d29..5424302 100644
--- a/src/env.h
+++ b/src/env.h
@@ -12,8 +12,7 @@ typedef struct env_function_t
   struct ast_t** args;
   int args_size;
 
-  struct ast_t** codes;
-  size_t codes_size;
+  struct ast_t* codes;
 
   enum
   {