Also, it's important to know that JCS does not always have the trigger zone event in a usable form. Go into JCS and create a generator for event 246. If it appears and something like "DO NOT USE," open the JCS.ini file, find
246=EMPTY |+| |DON'T |USE
and replace it with
246=Trigger Zone |+|Trigger |Trigger|Zone|TriggerID:5|onoff:1|switch:1

This will allow you to place the trigger zone event. When a player enters the tile containing this event, a trigger can be activated, almost like smashing a trigger crate. The trigger ID setting does the same thing as trigger ID does for a trigger crate, except it will not work if it's set to 0. The onoff setting will cause the trigger to act like it normally does when the corresponding crate is smashed if it is set to 1. If set to 0, it will reset the trigger scenery to how it was before any trigger zones or crates of the same ID were used. The Switch setting can cause one trigger zone to work for both on and off, which makes it much harder to control. This should usually be left at 0.