3 region triggers to open 1 door trigger

[hunglikeahuman]

i want to make a door open only when 3 units stand on 3 different region at the same time. its a puzzle game, u have to stand on the right 3 regions at the same time to make the door open up so u can go to the next room for the next puzzle.

 

[Amargaard]

Welcome to the Hive! I don't know how to fix those triggers of yours, at least not this early in the morning :b