Hero Check Condition

sup all,
im making a simple portal trigger that portals my hero to somewhere on the map when he steps in a certain area. however, i want it to be only when the unit that steps in the area is a hero; i do not want regular units to be able to do this.

is there some sort of condition that checks to see if the triggering unit is a hero?

never mind, i just saw that i can use boolean comparison. thanks anyway guys xD