Trigger: Wait till unit enters Region ?

Yo, can I make a Wait function that waits till a unit enters a certain region?

wait for condition checking ever 2.00 seconts

I c... thx :D

this is a laggy method. i sugest you make a new tirgger and turn it on where uwould put the wait. make the event uinit enters regon.

yw

Nope, it has to be in an action.
I make a fake Spell for a neutral unit that raises the terrain like a bridge, but I want it to stop once the player walked over the bridge and back to the casting unit.
(Yes,it´s something like Jesus splits the water ://// )