Need help making a unit cast a spell

[SpOnSoRu]

Ok so... im working on a cinematic that involves a unit casting the Rain of Chaos spell(which involves multiple infernals coming down from the sky in an area). The problem is i can't figure it out.

i've tried creating a dummy with the Rain of chaos ability at the moment i need it and "Order last created unit to Archimonde - Rain of Chaos at Target zone" but it just won't use the ability.... the dummy is created but it just stands there.

another thing i've tried is adding that ability to the unit that is supposed to cast it exactly at the moment i want him to cast it, and he will automaticaly use it.... the only promlem is that he uses it on random enemyes around him and not at the location i want, and i can't remove the enemyes around him as they are part of the action.

can anyone help me please ?

P.S. sorry for the long description

 

[Spartan-117]

Yes, see if this attachment can help:

 

[XPQJ]

did you have the ability on the dummy unit "Rain of Chaos (Archimonde)"

there are more then 1 rain of chaos so check it. in the object editor, Abilities - Hero - Rain of Chaos (Archimonde)

 

[Pharaoh_]

What XPQJ said, plus, make your "enemies" Neutral Passive and change their ownership to Neutral Hostile, when you want some action