How to limit number of (working) box triggers in level?

Hi there,

for a level I am currently building I want to limit the number of box triggers in order to limit the number of accessible rooms.
My goal is to create 25 rooms where only 5 can be accessed, the choice how ever which rooms to enter should be with the player.
Any ideas for otjer workarounds?

Thank you

how about a key system? basically they are only able to enter 5 rooms before their “keys” deplete. the keys dont even need to be something the player knows about if you dont want them to.