Ability Crashing WC3

function Trig_Deaths_Touch_Conditions takes nothing returns boolean
    return GetUnitTypeId(GetAttacker()) == 'N00W' 
endfunction

function Deaths_Touch_Damaged_Conditions takes nothing returns boolean
    return GetEventDamageSource()==GetHandleUnit(GetTriggeringTrigger(),"atk")    
endfunction

function Deaths_Touch_Damaged_Actions takes nothing returns nothing
    local unit u = GetEventDamageSource()
    local unit v = GetTriggerUnit()    
    local integer lvl = GetUnitAbilityLevel(u,'A03G')  
    local real damage = GetEventDamage()*(.05*lvl)  
    
    if lvl<1 then
        call UnitAddAbility(u,'A03E')
        call SetUnitAbilityLevel(u,'A03G',1)
        call DestroyEffect(AddSpecialEffectTarget("Timerift Missle.mdx",u,"chest"))
    elseif lvl<5 then
        call SetUnitAbilityLevel(u,'A03G',lvl+1)
        call DestroyEffect(AddSpecialEffectTarget("Timerift Missle.mdx",u,"chest"))
    endif
    call UnitDamageTarget(u,v,damage,false,true,ATTACK_TYPE_HERO,DAMAGE_TYPE_NORMAL,null)
    call BJDebugMsg(R2S(damage))
    
    call FlushHandleLocals(GetTriggeringTrigger())
    
    set u = null
    set v = null
    call DestroyTrigger(GetTriggeringTrigger())
endfunction

function Deaths_Touch_Change_Conditions takes nothing returns boolean
    return GetAttacker()==GetHandleUnit(GetTriggeringTrigger(),"atk") and GetTriggerUnit()!=GetHandleUnit(GetTriggeringTrigger(),"atckd")    
endfunction

function Deaths_Touch_Change_Actions takes nothing returns nothing    
    call UnitRemoveAbility(GetHandleUnit(GetTriggeringTrigger(),"atk"),'A03E')
    call FlushHandleLocals(GetTriggeringTrigger())    
    
    call DestroyTrigger(GetTriggeringTrigger())      
endfunction

function Deaths_Touch_Remove_Trigger takes nothing returns nothing
    local timer t = GetExpiredTimer()
    local trigger trig = GetHandleTrigger(t,"trig")
    local trigger trig2 = GetHandleTrigger(t,"trig2")
      
    call FlushHandleLocals(trig)
    call DestroyTrigger(trig)
    call FlushHandleLocals(trig2)
    call DestroyTrigger(trig2)
    call ClearTimer(t)
    
    set trig = null    
endfunction

function Trig_Deaths_Touch_Actions takes nothing returns nothing
    local unit atk = GetAttacker()
    local unit atckd = GetTriggerUnit()
    local trigger trig = CreateTrigger()
    local trigger trig2 = CreateTrigger()
    local timer t = CreateTimer()       
    
    call TriggerRegisterUnitEvent(trig,atckd,EVENT_UNIT_DAMAGED)
    call TriggerAddCondition(trig,Condition(function Deaths_Touch_Damaged_Conditions))
    call TriggerAddAction(trig,function Deaths_Touch_Damaged_Actions)
    call SetHandleHandle(trig,"atk",atk)
    
    call TriggerRegisterAnyUnitEventBJ( trig2, EVENT_PLAYER_UNIT_ATTACKED )
    call TriggerAddCondition(trig2,Condition(function Deaths_Touch_Change_Conditions))
    call TriggerAddAction(trig2,function Deaths_Touch_Change_Actions)
    call SetHandleHandle(trig2,"atk",atk)
    call SetHandleHandle(trig2,"atckd",atckd)    
    
    call SetHandleHandle(t,"trig",trig)
    call SetHandleHandle(t,"trig2",trig2)        
    call TimerStart(t,1.,false,function Deaths_Touch_Remove_Trigger)       
    
    set atk = null
    set atckd = null
endfunction

//===========================================================================
function InitTrig_Deaths_Touch takes nothing returns nothing
    set gg_trg_Deaths_Touch = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( gg_trg_Deaths_Touch, EVENT_PLAYER_UNIT_ATTACKED )
    call TriggerAddCondition( gg_trg_Deaths_Touch, Condition( function Trig_Deaths_Touch_Conditions ) )
    call TriggerAddAction( gg_trg_Deaths_Touch, function Trig_Deaths_Touch_Actions )
endfunction

call UnitDamageTarget(u,v,damage,false,true,ATTACK_TYPE_HERO,DAMAGE_TYPE_NORMAL,null)