Door/Moving Platform Triggering Problem

[metal_head]

I don't know what am I doing wrong but every time I try to make a door or moving platform which is triggered by another world model I fail.I create the door the trigger and the model used to activate the trigger when collided with,but when I compile the level and touch the triggering model the door does not activate.I read a tutorial about this and did the same as it said and still nothing so PLEASE can someone make a 3dt. map or give a link for one where there's a door or a moving platform triggered with a world model.I want to put in my game a door which is locked and you have to find the switch to open it.


BTW everything else with a trigger works messages,cutscenes all but not the door and the moving platform