avoid

Guys I am making a purely open world game where you can jump in things, go into higher terrain, etc. But my problem is that I am purely using REGIONS, also as pathing blockers. I can't use the normal pathing blockers because I need to detect a unit's flying height to see if he can pass through a...

Is it possible via object editor? I mean, making an ability like Demon Hunter's Evasion, but avoiding only siege attack type.