Trigger question

I have a litel trigger prob.
If an hero is dead when a trigger goes of, it won´t work, right!
So if I want the hero to be revived if he´s dead when the trigger goes of.... how do I do?

Thanks:D

first action of the trigger:

If (boolean - Unit is dead, pick the hero) Then do Hero - Revive (pick the hero again) at location (whereever) else do nothing

You can try the Hero - Revive (instantly). You can have him revive and tell him where to spawn.