Ability that damages unit in front of caster?

[Frosty5]

Hey guys, is it possible to make a spell/ability that would when cast (no point spell/ability) damage a single unit in front of the caster?
Thanks

 

[Maker]

Events
Unit Starts the effect of an abil
Cond
Ability == your abil
Actions
Pick units within range
unit group loop
->filter out unwanted units
endloop
Damage random unit from picked group

Backstab trigger:

• Attack GUI
  • Events
    • Unit - A unit Is attacked
  • Conditions
  • Actions
    • -------- -------------------------------------------------- --------
    • -------- Set unit variables --------
    • -------- -------------------------------------------------- --------
    • Set u1 = (Attacking unit)
    • Set u2 = (Triggering unit)
    • -------- -------------------------------------------------- --------
    • -------- Set location variables --------
    • -------- -------------------------------------------------- --------
    • Set p1 = (Position of u1)
    • Set p2 = (Position of u2)
    • -------- -------------------------------------------------- --------
    • -------- Clear leaks --------
    • -------- -------------------------------------------------- --------
    • If (All Conditions are True) then do (Then Actions) else do (Else Actions)
      • If - Conditions
        • (Cos(((Angle from p1 to p2) - (Facing of u2)))) Greater than 0.00
      • Then - Actions
        • Game - Display to Player Group - Player 1 (Red) the text: Backstab!
      • Else - Actions
    • Custom script: call RemoveLocation(udg_p1)
    • Custom script: call RemoveLocation(udg_p2)

Set u1 = Triggering unit, u2 = picked unit in the loop. Use less than 0 in the angle condition.