Need Cycle_ID in Requirement

Hello Experts HP ALM.

I ask please your help.

I need a user field with Cycle Id value (using workflow code) in Requirement. Example When user is creating new Requirement, user will select Target Cycle, I need also a Cycle Id.

In requirement workflow I try:

I create a User Field for this. Code_Cycle_Id in requirements. (RQ_USER_TEMPLATE_01)

Req_Fields (RQ_USER_TEMPLATE_01).value = CycleFields (RCYC_ID).value

This not work

I cannot find a way to relate the requirement with the Cycle Id

Thank You