on_zone_unload

Response Typescript
EntitiesRooms, Mobiles, Objects
ParameterszoneId1 zoneId2 zoneId3 ...

    This trigger will fire when a zone is being unloaded whose ID is in the
parameter list. The script is invoked immediately beore the zone is
cleared and so can work with the state of the zone as it was before being
unloaded.

@zoneId - The ID of the zone being unloaded.