Trigger Help

I need some help with code structure for a map.

The purpose of the trigger is when a specific building dies, it randomly chooses a new spot from a list of regions (set up in an array) to place a new building, but needs to check that region to see if another players building is in that region first and choose a new one if there is. Think Bunker Command for the basic idea.

I've been succesful up to a certain point, but when I though I had it, I ran into some huge errors.

Great thanks to any help :)

I did exactly that in my in map "Burrow Command" (which is being play-tested for balance as I type this) and sent you an email. Hope it helps!