Trigger to activate by a certain unit

[bob2000]

please help is it possible to make a trigger activate by a certain unit. for example i have thress soldiers i want the trigger to go off but only when a certain soldiers walks into it. Is this possible and if so how do you do it?

[hoz]

I believe you use the grouping button to group the unit with the trigger.

[bob2000]

Ill try it thanks, also could you anyone please tell me how to find a units grid ref im wanting to make him stand on a building but i have no idea where abouts he is on the map

[hoz]

See how to place a unit higher up.

OFPEC-Faq (http://www.ofpec.com/FAQ/faq_units.php#place)