Nid help at triggering game

Nid help at triggering game

How do i make a trigger to order the comp to move to the whole map finding units(enemy) and kill him?? (eg: undead tag, teacher tag, zombie tag, kodo tag and etc.)

help me plss...

Events
Unit - A Unit enters Middle <gen>
Conditions
Unit-type of Triggering Unit equal to Evil Kodo
Actions
Set myGroup = Units of type Runner
Set loc = Position of (Random Unit from group Runner)
Destroy myGroup
Unit - Order Triggering Unit to Attack-Move to loc
Custom Script: call RemoveLocation( udg_loc )