function Trig_Test_Conditions takes nothing returns boolean
     if ( not ( GetUnitAbilityLevelSwapped('AOcr', GetTriggerUnit()) == 0 ) ) then
         return false
     endif
     return true
endfunction

function Trig_Test_Actions takes nothing returns nothing
     call UnitDamageTargetBJ( GetTriggerUnit(), GetTriggerUnit(), 5.00, ATTACK_TYPE_MELEE, DAMAGE_TYPE_NORMAL )
     call UnitAddAbilityBJ( 'AOcr', GetTriggerUnit() )
     set udg_I = ( udg_I + 1 )
     call DisplayTextToForce( GetPlayersAll(), I2S(udg_I) )
     call TriggerSleepAction(1.)
     call UnitRemoveAbilityBJ( 'AOcr', GetTriggerUnit() )
     set udg_I = 0
endfunction

//===========================================================================
function InitTrig_Test takes nothing returns nothing
     set gg_trg_Test = CreateTrigger(  )
     call TriggerRegisterUnitEvent( gg_trg_Test, gg_unit_hrif_0000, EVENT_UNIT_DAMAGED )
     call TriggerAddCondition( gg_trg_Test, Condition( function Trig_Test_Conditions ) )
     call TriggerAddAction( gg_trg_Test, function Trig_Test_Actions )
endfunction

unit udg_u1, udg_u2;

void func(unit u) { u = udg_u1; }

void test() {
     unit u = udg_u2;
     func(u);
     if u == udg_u2 { printf("Ничего не изменилось"); }
}