udf in MRF to update the rotational speed

Jam

Hi there, I need to update rotational speed according to the moment constant I monitor from the Force monitor, while using an MRF model. I am able to do this manually but I want to make an udf that will do this job for me automatically. I figured out that I can reach the angular velocity variable by THREAD_VAR(tc).fluid.omega if I unterstood it correct. But how can I reach the moment constant which is represented as fmon/cm under the transcript file. And after completing the c file can I use interpreted? How to hook the udf for the rotational speed? Does it go automatic? If it is so what should be written in the rotational speed part? If anyone can reply any of the questions I will be so glad. Thanks indeed.

Regards,