Fine then, we have updated the MMS so that every Add… BP node returns a reference to the newly created menu element. Using that you can easily hook your own function to the new menu element’s event dispatcher, as discussed before. I have already sent the update to Epic, will let you know when the new version has been published by them!
That is strange, as we do the same in MyEventHandler in the demo project. You can have a look there in its event graph: the EventButtonCallback function overrides the same function in the parent class MMS_EventHandler. And that can be saved fine! Do you maybe try to override the private version of the same function (but prefixed with “Private”)?