Area of Effect on Sleep Spell??

Is there any way to make sleep an Area of Effect spell?? I'd like it to have a targeting circle, like blizzard, rain of fire, Force of nature, you know, the circle thing... I need to know ASAP, and if you can't why in the gods name would they include the "Area of Effect" fields in the editor for half of these spells anyways?!?!

As far as i know, you can only do this with triggers. First, do a region about the size of your spell's AOE and make it a variable. Then, do these triggers:

Events
-A unit is issued an order with no target
Conditions
-(Issued Order) Equal to Mass Sleep
Actions
-Region - Center SleepRegion on (target point of issued order)


Events
-A unit begins casting an ability
Conditions
-(Ability being cast) Equal to Mass sleep

Now, create a number of units without models (preferrably Wisps, since they have no shadow) and order them to cast Sleep on all units in "SleepRegion". I think it should work.

BTW, what happened to your "gods" idea?