Fixes for creating variable in local scope

src/Script.hpp

@@ -39,9 +39,8 @@ public:
         return _lastValue;
     };
 
-    EvalValue* GetVariable(const string& key){
-        return _scriptVariables -> at(HashedString(key).GetHash());
-    }
+    EvalValue* GetVariable(const string& key);
+    bool HasVariable(const string& key);
 };