Unsure what you are looking for.
However, your trigger fires only when you click on that specific unit. Now, I dont speak.. German?. But this condition "(Unit is A Hero) Equal to Wahr" I believe would check if the unit you selected is a hero, which it most likely isnt? That is probably the reason you feel your trigger never fires. Same with triggering unit, your triggering unit is the unit youre selecting, not the one you probably want to teleport.