How to copy hand animation from one Avatar to another Live on update.

Hi

I have a main player with avatar.

I need to copy animation from another avatar live in my scene. Specifically the hand motions.

So where the other Avatar in the scene animates the hand, my Avatar hands do the same

I have setup a mask for the hands. But Im not sure how to copy the animation (from hand thru fingers) I need this done live so I presume it will be at a specific frame function (updateAnimation() or something?)

Any ideas?

Thanks!!

-P