@Destined
I tried again with the grammo, but nothing happens, even with a trigger in between. I guess a model on it's own doesn't have anything in it to define what happens when frobbed, so a frob_action_script should be added. I also tried frob_action_script:frob_door , that is already in the game itself, so doesn't have to be scripted separately, but that doesn't work. But I found a post regarding this:
That way it works without having to write your own script : )
Thanks .. I have put the simple/obvious method in to the post/tutorial.