Override animation controller - how?

[[frl]myke 15]

Ok, referring to this:

http://community.bistudio.com/wiki/Model_Config#AnimationSources

Especially the third example there

class AnimationSources
{
  class wheel
  {
     source = "::wheel"; //Overriding the existing wheel controller.
  };
};

It overrides the wheel controller as animation source but somehow it should be possible to define new data source which is the used by animations that are assigned to "wheel" animation source.

As far as i understand it, this override hooks in between the game engine providing data for wheel animations and the model.cfg where the animation "is done".

Sadly example misses the part on how i can use this hook-in to fill it with own data, probably by a script.

Anyone has more info about this and how i get my own data to the overriden controller?