Can anyone see what is wrong?

[FeelsGoodMan]

Do any of you see what is wrong here? Might be my lack of sleep.

Arcane explosion lvl 3
    Events
        Unit - A unit Starts the effect of an ability
    Conditions
        (Ability being cast) Equal to Arcane Explosion
        (Level of Arcane Explosion  for (Triggering unit)) Equal to 3
    Actions
        Special Effect - Create a special effect at (Position of (Triggering unit)) using Units\NightElf\Wisp\WispExplode.mdl
        Unit Group - Pick every unit in (Units within 500.00 of (Position of (Triggering unit)) matching (((Owner of (Picked unit)) Equal to Neutral Hostile) or ((Owner of (Picked unit)) Equal to Player 4 (Purple)))) and do (Actions)
            Loop - Actions
                Unit - Cause (Triggering unit) to damage (Picked unit), dealing 70.00 damage of attack type Spells and damage type Normal
        Sound - Play SpellStealMissile <gen> at 100.00% volume, attached to (Triggering unit)

It doesn't damage the units I want it to damage (it doesn't damage anyone as a matter of fact).

(also how do I insert triggers in a thread like I see everyone doing?)

 

[Daffa]

Picked Unit in the Matching condition should be 'Matching Unit'
Triggering Unit inside the loop should be 'Picked Unit'

 

[FeelsGoodMan]

Picked Unit in the Matching condition should be 'Matching Unit'
Triggering Unit inside the loop should be 'Picked Unit'

Thanks, I didn't know that