diff --git a/src/UserData/UserDataValue.hpp b/src/UserData/UserDataValue.hpp
index af2c386..8e06d61 100644
--- a/src/UserData/UserDataValue.hpp
+++ b/src/UserData/UserDataValue.hpp
@@ -74,6 +74,12 @@ namespace Porygon::UserData {
             delete value;
         }
 
+        void SetIndexValue(const Utilities::HashedString *key, const EvalValue *value) const override {
+            auto field = _userData->Get()->GetField(key->GetHash());
+            field->Set(_obj, value);
+            delete value;
+        }
+
         [[nodiscard]] inline void* GetObjectPointer() const{
             return _obj;
         }
@@ -82,7 +88,6 @@ namespace Porygon::UserData {
         EvalValue* Cast(shared_ptr<const ScriptType> castType) const final{
             return _userData->Get()->Cast(_obj, castType.get());
         }
-
     };
 }