Custom Spell Targets...

Is there anyway to get a spell, like Shockwave, that can damage several units, to actually damage ALL units (allied or enemy)?

edit the spell's targets to include "friend". Think that should do it.

No, I need to beable to target both enemy/allied units, but have it deal damage to ANY unit in its path. I'm probally going to end up just switching the control before it casts the spell.