Hi Trigger events triggers for any colliders.
If you want to be selective, use the trigger event action instead.
also look in the testlab, there are examples of this usage in the triggers folder.
So for example if you wanted that dor to only react to the player but not ennemies, you tag the player with a newly created tag "player" and tag ennemies with "ennemies" and in the trigger event action you select "player", that way the door will only react to objects tagged "player"
also, don't forget to properly set up your colliders, and physics, else it jsut won't trigger even with normal scripts.
http://unity3d.com/support/documentation/ScriptReference/Collider.OnTriggerEnter.htmlIf you are still stuck, I'll try to be more explicit
Bye,
Jean