Mount Animation


Hi to all,
I've just created a new mount reciclying a monster animation.
I would animate the mounted creature (i.e. with the fly animation) leaving the player (rider) in the idle mount status, but when I use the animate( slot number 19 ) function both dragon and player play the same slot animation ( so, the creature flies and the player attacks with crossbow).

How can I animate just the mounted creature or even animate with two different slots the rider and the mounted?

Thank You