Thx! I saw that, however, since it didn’t work i thought you might have implemented something under the hood that’d make sure only an object of a certain class which also has the interface implemented might be accepted into the array slots. Quite new to Unreal and just made the move from Unity, so excuse my lack of knowledge. That said i found the problem. It didn’t work because i dropped the objects on a level layer different from the button objects. That’s why the editor wouldn’t accept a reference to one of those newly created objects… Note to self: Never forget to set your working level layers after reopening the editor. So thx again and sorry for my stupidity. Cheers.