How can I make a unit tilt their head down?

[X-Death]

I want to make a unit tilt their head down. Can this be done with 'Animation - Lock Body-Part Facing' in the trigger editor? If so, what should I set the values to?

 

[LordDz]

In the editor, create a unit called "Dummy Flyer", set it's flying height to -200 (shift-click) and set it to flying.
Create a dummy flyer at the unit that should face down.
Use animation Lock Body Part Facing - Position of unit Dummy Flyer.
Cleanup leaks etc.

 

[Veritas 117]

Make sure you set the minimum height to -200 as well or else it wont go underground like you want it