Is Player Editing Build Checker

Is it currently possible to know if player is editing a build in UEFN?
I know how to check if they are building by tracking their resource wood, stone and metal to see if it changes, but I’m not entirely sure about editing.
I had an idea where you get where the player is looking at and somehow edit the wood, stone and metal blueprints to have blocks for each edit point (9 total) and if it does it fast in a certain order then they’re editing, but seems too complicated to implement.