How to make monsters respawn at original location

[hiphopaznkid]

i want a trigger so the monsters respawn at the spot they were place. Someone told me to use eneumerate through all units and store a location or x and y real pair of their intitial position but i dont know how.

 

[Maker]

In this test map neutral hostile units will respawn where they were originally placed.

http://www.hiveworkshop.com/forums/pastebin.php?id=dy9gbt