Detecting targets of Barrage

[Galdiuz]

I have a unit with an ability based of barrage. I want each attack of that unit have a chance to cast a frost nova, but how can i make this trigger run? I have made a trigger, but it doesn't work. So what event should i use?

Rapid Tower
    Events
        Unit - A unit Is attacked
    Conditions
        (Unit-type of (Attacking unit)) Equal to Rapid Tower
    Actions
        Set Atemp_loc = (Position of (Attacked unit))
        Unit - Create 1 Caster Dummy for (Owner of (Attacking unit)) at Atemp_loc facing Default building facing (270.0) degrees
        Custom script: call RemoveLocation (udg_Atemp_loc)
        Unit - Order (Last created unit) to Neutral - Firebolt (Attacked unit)
        Unit - Add a 2.00 second Generic expiration timer to (Last created unit)

I'm just using firebolt for now, haven't made the frostnova yet.

 

[Pharaoh_]

Events
        Unit - A unit Is attacked
    Conditions
        (Unit-type of (Attacking unit)) Equal to Rapid Tower
        (Level of (BarageAbility) for (Attacking unit)) Greater than 1
        (Random Integer number between 1 and 100) Less than or Equal to (your chance, 25 for example)
    Actions
        Set Atemp_loc = (Position of (Attacked unit))
        Unit - Create 1 Caster Dummy for (Owner of (Attacking unit)) at Atemp_loc facing Default building facing (270.0) degrees
        Unit - Order (Last created unit) to Neutral - Firebolt (Attacked unit)
        Unit - Add a 2.00 second Generic expiration timer to (Last created unit)
        Custom script: call RemoveLocation (udg_Atemp_loc)

 

[Galdiuz]

Ah, thanks, i'll try that. (Without the random integer for now, i'll add that later.)

Edit: It worked good. I just probably made something wrong last time...
Can't rep you though, already did that some time ago.

Edit2: The dummy units are going rampage! They cast other spells! Ahhhhhhhhh! (I gotta fix that xD)