Auto Cast attack template doesnt work

//Autocast ability ID.
function AC_AbilityID takes nothing returns integer
    return 'A005'
endfunction

//Autocast buff ID.
function AC_AbilityBuffID takes nothing returns integer
    return 'B000'
endfunction

//Autocast ability's turn-on string
function AC_AbilityOrderIDOn takes nothing returns string
    return "poisonarrows"
endfunction

//Autocast ability's turn-off string
function AC_AbilityOrderIDOff takes nothing returns string
    return "unpoisonarrows"
endfunction

//* Floating Text misc functions

//Floating text red color level (%)
function AC_TextTagRedLevel takes nothing returns real
    return 1.00
endfunction

//Floating text green color level (%)
function AC_TextTagGreenLevel takes nothing returns real
    return 85.00
endfunction

//Floating text blue color level (%)
function AC_TextTagBlueLevel takes nothing returns real
    return 86.00
endfunction

//Floating text's transparency (%)
function AC_TextTagTransparency takes nothing returns real
    return 15.00
endfunction

//Actual floating text string. for now, returns base damage + extra damage.
function AC_TextTagString takes real damage, real extradmg returns string
    return I2S(R2I(damage+extradmg))
endfunction

//determines whether to use the floating text or not. currently enabled;
//in order to disable it, change "return true" to "return false".
function AC_UseTextTag takes nothing returns boolean
    return true
endfunction

//* End floating text misc functions

//Trigger's main condition
function AC_Condition takes nothing returns boolean
    return( GetLearnedSkill() == AC_AbilityID() )
endfunction

function AutoCast_Effect takes nothing returns nothing
    local texttag g
    local real d = 1
    local trigger t=GetTriggeringTrigger()
    local real vel = TextTagSpeed2Velocity(64.0)
    local real xvel = vel * Cos(90.0 * bj_DEGTORAD)
    local real yvel = vel * Sin(90.0 * bj_DEGTORAD)
    local real textHeight

    
    if GetUnitAbilityLevel(GetTriggerUnit(), AC_AbilityBuffID()) > 0 and GetUnitAbilityLevel( GetEventDamageSource(), AC_AbilityID() )>0  then
        call DestroyTrigger(t)
        call KillUnit(GetTriggerUnit())
//      Add whatever actions you want
//      in these lines;
//      this function triggers when the target unit is hit
//      by the autocast ability.

//      you may change the floating text's color, transparency,
//      string, state (enabled or disabled) by changing
//      the misc floating text functions above.

        if AC_UseTextTag() then

            set g = CreateTextTag()
            set textHeight = TextTagSize2Height(10.0)
            call SetTextTagText(g, AC_TextTagString(GetEventDamage(), 0.00), textHeight)
            call SetTextTagPosUnit(g, GetTriggerUnit(), 64.0)
            call SetTextTagColor(g, PercentTo255(AC_TextTagRedLevel()), PercentTo255(AC_TextTagGreenLevel()), PercentTo255(AC_TextTagBlueLevel()), PercentTo255(100.0-AC_TextTagTransparency()))
          
            call SetTextTagVelocity(g, xvel,yvel)
            call UnitDamageTarget(GetEventDamageSource(), GetTriggerUnit(), d, true, false, ATTACK_TYPE_HERO, DAMAGE_TYPE_DIVINE, WEAPON_TYPE_WHOKNOWS)
            call PolledWait(1)
            call DestroyTextTag( g )

        endif

    endif
    set g=null
    set t=null
endfunction


function AutoCast_Conditions takes nothing returns boolean
    if GetTriggerEventId() == EVENT_PLAYER_UNIT_ATTACKED then
        return GetUnitAbilityLevel( GetAttacker(), AC_AbilityID() ) == 0 or (GetAttachedInt(GetAttacker(),"CSon")==1 and IsUnitType(GetTriggerUnit(), UNIT_TYPE_STRUCTURE) == false)

    elseif GetTriggerEventId() == EVENT_UNIT_ISSUED_ORDER then

        if GetIssuedOrderId() == OrderId(AC_AbilityOrderIDOn()) then
            call AttachInt( GetTriggerUnit(), "CSon", 1)

        elseif GetIssuedOrderId() == OrderId(AC_AbilityOrderIDOff()) then
            call AttachInt( GetTriggerUnit(), "CSon", 0)

        endif

    elseif GetTriggerEventId() == EVENT_UNIT_SPELL_EFFECT then
        return GetSpellAbilityId()== AC_AbilityID()

    endif
    return false
endfunction


function AutoCast_Activate takes nothing returns nothing
    local trigger r=CreateTrigger()
    local unit t
    local event e
    local triggeraction ta

    if GetTriggerEventId() == EVENT_UNIT_SPELL_EFFECT then
        set t=GetSpellTargetUnit()
    else
        set t=GetTriggerUnit()
    endif

    set e = TriggerRegisterUnitEvent( r, t, EVENT_UNIT_DAMAGED )
    set ta = TriggerAddAction(r,function AutoCast_Effect)

    call TriggerSleepAction(2)
    call DestroyTrigger(r)

    set r=null
    set t=null
    set e = null
    set ta = null
endfunction


function Trig_AutoCastSystem_Actions takes nothing returns nothing
    local trigger r=GetTriggeringTrigger()
    local trigger t=CreateTrigger()
    local triggeraction ta
    local triggercondition tc
    local event array e1
    local event e2
    local event e3
    local integer index

    
    set index = 0
    loop
        set e1[index] = TriggerRegisterPlayerUnitEvent(t, Player(index), EVENT_PLAYER_UNIT_ATTACKED, null)

        set index = index + 1
        exitwhen index == bj_MAX_PLAYER_SLOTS
    endloop
    set e2 = TriggerRegisterUnitEvent( t, GetLearningUnit(), EVENT_UNIT_SPELL_EFFECT )
    set e3 = TriggerRegisterUnitEvent( t, GetLearningUnit(), EVENT_UNIT_ISSUED_ORDER )
    set tc = TriggerAddCondition(t, Condition(function AutoCast_Conditions) )
    set ta = TriggerAddAction(t , function AutoCast_Activate )


    call DestroyTrigger(r)
    set r=null
    set t=null
    set gg_trg_AutoCastSystem=null
    set index = 0
    loop
        set e1[index] = null
        set index = index + 1
        exitwhen index == bj_MAX_PLAYER_SLOTS
    endloop
    set e2 = null
    set e3 = null
    set tc = null
    set ta = null
endfunction

//===========================================================================
function InitTrig_AutoCastSystem takes nothing returns nothing
    set gg_trg_AutoCastSystem = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( gg_trg_AutoCastSystem, EVENT_PLAYER_HERO_SKILL )
    call TriggerAddCondition( gg_trg_AutoCastSystem, Condition( function AC_Condition ) )
    call TriggerAddAction( gg_trg_AutoCastSystem, function Trig_AutoCastSystem_Actions )
endfunction