how to use component controller of used component

Hi experts,

Just consider two standard components A and B.

B is used component in A.And data transfer from B to A is through interface controller.

I need to transfer some more datas in my enhancement.In enhancement mode I have added a node and some attributes in component B

Due to enhancement mode i cannot create any interface node or interface method.

But i need to pass the value from component B to component A.

How to achieve this?

Any suggestion is welcome.

Regards,

Ramanan