Can you please add:
IsInVolume<public>(Agent:agent)<transacts><decides>:void = external {}
to the creative device:
volume_device<public> := class<concrete><final>(creative_device_base):
It’s not possible to set a volume device as an external to a mutator_zone and call the function per my testing, and would be really nice to have this functionality without the need of a mutator zone seeing as the function doesn’t use the device anyways, kind of seems like a shoe-in.