xna manual animation -

I want to change the 3D model in XML programmatically, I tried to change the bones but only the entire model Do not try to change the bones as I want to read the 3D model through the original model processor

How do I do this?

and there is no need to extend the model processor like the schemmed model sample

Please explain the step

You are asking that the XNA creator is the perfect model of the club education site. Simple animation sample:

This sample shows how to model simple programmed rigid body animation using the XNA Framework.