Is the following possible to do with a trigger and scripts?        1      Duplicate a random unit or a group of units from a list of variable names in a radius around the player        2     Tell the unit to attack the player        3     Repeat the above steps when the spawned unit is killed   This should continue indefinitely as long as the spawned units continue to be killed.   I have already tried this:  Custom Dynamic AI Spawn System appears to only work with the default units. About half the time it doesn't work at all. I assume this is because it is very outdated.