Air to Ground Unit via editor

I'm trying to make a harpy attackable by ground units. I was curious if you could make flying units attackable by ground by using the editor, or if the flying part is hardcoded and I just need to make a new ground unit and give it the harpy model.

Edit
Sorry I should clarify more: I want to turn a flying unit into a ground unit. Kind of like how in DoE one of the wave spawns is a dragon, but it acts like a ground unit. Is this hardcoded, or do I just need to make a ground unit and give it the model?

Make it targeted as a ground unit? Amongst other things, triggers can check for flying/ground type.

To make a "flying" unit that moves across the ground, though, is different. Hover-type movement can make ground units have flying height.

There's a field at the very bottom of units. It's called "Targeted As", and "Ground" is one of the options. Tick that instead of "Flying".

Ah, that did the trick.
+rep.