Triggers stopped working after implenting Castersystem and Attack Detection System

//after this func stopped working i modified it, so that it can be called using the attack detect engine...
//i just added the "takes unit Damager" instead of a local unit u=GetTriggerUnit()
library PI
function PalaIronheart takes unit Damager returns nothing
    local location l=GetUnitLoc(Damager)
    local unit u=CreateUnitAtLoc(GetOwningPlayer(Damager),'n003',l,0)
    call RemoveLocation(l)
    call UnitAddAbilityBJ( 'A00C', u)
    if (GetRandomReal(0, 100.00) <= 15.00) then
        call BJDebugMsg("test")
        call IssueTargetOrderById(u, 852092,Damager) //order id of holybolt ...
    else
    endif
    call KillUnit(u)
    call RemoveUnit(u)
    set u=null
    set l=null
endfunction
endlibrary

//forced by WE -.-
function InitTrig_H_PALA_Ironheart takes nothing returns nothing
endfunction


//here the function which calls the function above ...(this function is called instead of the DamageTest func in Vexs AttackDetect Engine)
function UnitDamaged takes nothing returns nothing
 local unit u=GetTriggerUnit()
 local unit a=GetEventDamageSource()

if (AttackDetect_DamageByAttack()) then
if (a!=null) then
    if ( IsUnitType(a, UNIT_TYPE_HERO) == true and GetUnitAbilityLevelSwapped('A00B',a) >= 1) then     
        call PalaIronheart(a)
    endif
else
endif
endif

 set u=null
 set a=null
endfunction

function Trig_PALA_Divine_Blessing_Conditions takes nothing returns boolean
if (GetSpellAbilityId() == 'A00A') then
return true
else
return false
endif
endfunction

function Divine_Blessing takes nothing returns nothing
local location l=GetUnitLoc(GetTriggerUnit())
local unit u=CreateUnitAtLoc(GetOwningPlayer(GetTriggerUnit()),'n003',l,0)
call RemoveLocation(l)
call UnitAddAbility(u,'A009')
call SetUnitAbilityLevelSwapped( 'A009', u, GetUnitAbilityLevelSwapped('A00A', GetTriggerUnit()) )
call IssueTargetOrderById(u, 852066,GetTriggerUnit())
call KillUnit(u)
call RemoveUnit(u)
set l=null
set u=null
endfunction

//===========================================================================
function InitTrig_H_PALA_Divine_Blessing takes nothing returns nothing
    set gg_trg_H_PALA_Divine_Blessing = CreateTrigger(  )
    call TriggerRegisterAnyUnitEventBJ( gg_trg_H_PALA_Divine_Blessing, EVENT_PLAYER_UNIT_SPELL_EFFECT )
    call TriggerAddCondition( gg_trg_H_PALA_Divine_Blessing, Condition( function Trig_PALA_Divine_Blessing_Conditions ) )
    call TriggerAddAction( gg_trg_H_PALA_Divine_Blessing, function Divine_Blessing )
endfunction