Aura Targets Question

I need to make auras that target only enemy units. The base auras only target allied units so I simply set the targets to enemy, ground, etc. but it didn't work. I know it is possible to make auras target only enemies because I did it in my §atanic Villager Massacre map several times (which I don't have a copy of at this time). Can anyone tell me the targets I need to set for auras to target any unit except allied?

Try unchecking Friend and Self, and add Enemy, though I don't know if that will work.

It didn't work, thanks for the idea though.
Someone out there must know.

Yay it worked. Thankyou so much, now I can release my map!! :)

The target field needs an "Undead" and "Neutral" option. >:/ Would really work out for me in my case.