function KDDS_Display takes nothing returns nothing
     local unit u = GetTriggerUnit()
     local unit t = GetEventDamageSource()
     local real d = GetEventDamage()

     if GetUnitAbilityLevel(t, 'AUau') > 0 then  
     call UnitDamageTarget(t,u,d,false,false,ATTACK_TYPE_PIERCE,DAMAGE_TYPE_NORMAL,null)
     endif

     set u = null
     set t = null
endfunction

function KDDS_RegisterUnit takes unit u returns nothing
     call TriggerRegisterUnitEvent( gg_trg_Display_Damage_System, u, EVENT_UNIT_DAMAGED )
endfunction
      
function KDDS_SetUp takes nothing returns nothing
     local group g = CreateGroup()
     local unit u
     set g = GetUnitsInRectAll(GetPlayableMapRect())
     loop
         set u = FirstOfGroup(g)
         exitwhen u == null         
         call KDDS_RegisterUnit(u)
         call GroupRemoveUnit(g, u)
     endloop
     set g = null
endfunction

//===========================================================================
function InitTrig_Display_Damage_System takes nothing returns nothing
     set gg_trg_Display_Damage_System = CreateTrigger(  )
     call TriggerAddAction( gg_trg_Display_Damage_System, function KDDS_Display )
     call KDDS_SetUp()
endfunction