Does quest::disable_spawn2 work?

[MNWatchdog]

I'm trying to depop a area of a zone of it's current mobs and prevent those mobs from respawning using quest::disable_spawn2(#####); and the mobs still continue to spawn.

I want these mobs to stay down until I use quest::enable_spawn2.

I've tried using the disable both before and after depopping the mobs.

Am I using this wrong? Did a search and there's no examples I can find of it being used and of course the Wiki has no information other than this function exists.