so my zones were working fine and then i added a new room and a zone and the risers were working fine in there too, but then i added a buyable debris and then the zombie started only spawning in the first room even when i had every door in the map bought they were still spawning in only the first room. the problem started after i added the door.

make sure you have the debris set as "dynamicpath" in the Entity window if its a script_brushmodel. this is needed so zombies can spawn and walk through he door.

this could be your problem