Backstab help

[ROBBYDOBBY]

I've created an ability called backstab like the one on WoW, the ability is a dummy spell, It just causes triggers to operate when used. I tried but it dosen't work, preferably because the points aren't right.

Backstab
    Events
        Unit - A unit Begins casting an ability
    Conditions
        (Ability being cast) Equal to Backstab 
        ((Region((Position of (Attacked unit)), (Point(0.00, 180.00)))) contains (Casting unit)) Equal to True
    Actions
        Unit - Cause (Casting unit) to damage (Target unit of ability being cast), dealing (Random real number between 700.00 and 1600.00) damage of attack type Pierce and damage type Force

Any ideas?

 

[Sooda]

> An ability called backstab like the one on WoW.

What it should do or how it should do it ? Is it ordinary backstab where backstabber needs to behind of target to gain critical hit ?

Conditions
    ((Facing of (Triggering unit)) Greater than or equal to ((Facing of (Target unit of ability being cast)) + 150.00)) and ((Facing of (Triggering unit)) Less than or equal to ((Facing of (Target unit of ability being cast)) - 150.00))