[Solved] Damage Detection fires multiple times on single cast

[Watsuby]

Casting a very basic Firebolt ability.
Damage detection seems to go off...
1. On application of stun
2. On damage
3. On removal of stun

Am I using the system correctly?

Spoiler: Code Here

package Fireball

import AbilityObjEditing
import ObjectIdGenerator
import Icons
import DamageDetection

public constant int FIREBALL_ID = compiletime(ABIL_ID_GEN.next())

public constant string SPELL_NAME = "Fireball"

@compiletime
function genSpell()
    new AbilityDefinitionFireBolt(FIREBALL_ID)
    ..presetTooltipLearn(lvl -> "Learn " + SPELL_NAME + " - Level " + lvl.toString())
    ..presetTooltipNormal(lvl -> SPELL_NAME + " - Level " + lvl.toString())
    ..presetTooltipNormalExtended(lvl -> "Cast a burning ball of fire at target enemy.")
    ..presetCooldown(lvl -> 1.)
    ..presetManaCost(lvl -> 0)
    ..presetCastRange(lvl -> 700.)
    ..presetHotkey("Q")
    ..presetButtonPosResearch(0, 0)
    ..presetButtonPosNormal(0, 2)
    ..presetIcon(Icons.bTNFireBolt)


init
    addOnDamageFunc() ->
        unit damager = GetEventDamageSource()
        unit target = GetTriggerUnit()
        real damageAmount = GetEventDamage()

        print(damager.getName() + " damaged " + target.getName() + " for " + damageAmount.toString())

Blood Mage damaged Murloc Huntsman for 0.000
Blood Mage damaged Murloc Huntsman for 100.000
Blood Mage damaged Murloc Huntsman for 0.000

Spoiler: Screenshots Here

 

[MyPad]

Yes, that is the intended behavior of spells which have a stun component. When the stun debuff is removed, the unit previously having the buff will be damaged again with a zero damage instance as a way of provoking the aggro mechanics of the system.