Help with Unit Animations

I want my grom hellscream to raise his axe in the air, and I nkow that that is one of his animations. What do I type into the animation box to specify that animatin?

Could anybody point we to a link or something that has a list?

You find a action that says

Animation-Play unit animation
Play Unit's ____ animation

Click "Units" and choose the type of guy you want it to be.
In ____ just put in the animation name.