Animation Problem

I Need Help:

1) i want to make the CryptLord fly when i use the Fly ability so i used the chaos ability to change the ground hero to fly hero when he use the ability fly and i used the animation "Spell Channel" to make the hero move it wing like if he was flying but as soon a i move the hero loose his animation and start a standard walk and stand animation. what i need is to lock the "Spell Channel" animation or to replace the standard walk animation with the other.

2) the Cryptlord has alternate fly looking animation but when i add alternate to the unit object editor it doesn't work to show the alternate animation, how does that work.