How to Reference a BP from a Different BP

I have a Interact BP interface that allows me to call functions of BPs that I click on in the world. My issues is this is the first time iv needed to call a function and cast to a different BP then the one iv clicked on in the world. (Click a button to destroy another actor BP and reset it) I have a few pictures showing how its set up. If someone could explain in baby steps how to get a reference to another BP I would be grateful.

Just what I needed! Thanks so much.

You need to give it a reference to your moveable small cube. If there’s only 1 you can just use GetActorOfClass to find a reference to it.