>>342481027
Make an animation where the bone starts at rest rotation and ends at the rotation you want to radial it over to. Disable looping on that animation.
Make a float parameter in your parameter list and a radial puppet in your menu. 0 is the start of the animation and 1 is the end so if you want it to be half way by default for example, set the default parameter value to 0.5.
In the FX animator add the float parameter, make a new layer with full weight and throw your animation you made on there. Set the state to use normalized time and select your float.
That should be it