Hi,
you need the action LookAtDirection for this, take the right joystick x and y value, make it a vector, that's your direction, then use LookAtDirection to look at that direction.
have you tried that?
worse case, you can make a dummy as sibling of your player, and your move that dummy in self space based on the joystick value, which essentially is going to give you the target to use with a regular look at action.
Bye,
Jean