Proposal… …the door can be referenced on the level BP. The amount of coins is a variable on the character. The character has a dispatcher function which say communicates the number of coins the character currently is carrying. The level BP binds to the character’s dispatcher at BeginPlay. The bound event on the level BP checks for the number of coins to be 10 or greater. When this happens either the door is destroyed or hidden from the game.
Thoughts?