Area Triggers

[johnno56]

Basic Area Trigger question.

Am I correct in assuming that when an area trigger is placed on a map (irrespective of which game), that the area trigger does not differentiate in regards to the "Z" factor.

ie: If I place an area trigger at ground level, then based on the fact one would need to enter such area to set off an event, I could either enter the same area at any height above or below ground?

I am assuming that triggers can ONLY be placed at ground level.

I want to create a tunnel mission with the usual events (ie booby traps and sounds and messages etc) without having to include weather or environment factors.

Your thoughts please?

Regards

J