How do you get centre of spell Target Area?

I'm trying to make a new trigger spell based off Blizzard or Flame Strike, but I can't seem to get the target area, or the centre of target. What do I use to get the center Point?

Also, is there any way to remove the excess animations, such as the dying fires from Flame Strike? Or is there a better spell to use as a base? I want to select a point for a spell, but it's an area effect spell so I was thinking an AOE spell for base may look better. If all else fails, I'll use a simple point-n-click spell. Is there a good base spell that allows you to select point and not unit?

Cheers,
Ric

Trigger #1:
E:
Unit is given an order targeting a point
C:
Issued order equals <ORDER OF THE ABILITY>
A:
Set SpellTargetPoint = Point of Issued order

Trigger #2:
E:
Unit begins casting an ability
C:
Ability being cast equals <NAME OF THE ABILITY>
A:
<WHATEVER THE SPELL DOES, USE THE SpellTargetPoint VARIABLE TO GET CENTER OF THE SPELL>

yea, what he said. I was gettin to it.

That's not necessarily getting the center target of the spell.. But it's the right idea.

Use Silence btw, if you want a good dummy AoE spell - you can delete the graphics and literally make it do nothing.

Uhm, yes it is indeed the center of the spell. All area based spells have a center and a radius, and the center is where you click.