Defining the speed of an entity animation using a procedure

So now that we can have custom keyframe animations for entities, it would be really cool to have the same animation but in different speeds depending on a specific condition. So instead of defining the speed of the animation once with a specific number, i would suggest to have an option to link this value to a procedure wich returns a number that defines the speed of the animation.

So all in all a dynamic speed procedure in addition to the already available animation playable condition procedure.