FM to fetch Number of a WT from RT

Dear All,

We have a scenario in India Payroll.

We are creating the custom report, where we need few WTs NUM from RT of the employee in the report to process.

We have got few FM to fetch the Payroll WT data. Like as below:

HRCM_PAYROLL_RESULTS_GET

PYXX_READ_PAYROLL_RESULT

But the problem we are facing is this FM is only fetching AMT part of the WT and not NUM from RT.

So please guide how the NUM part of the WT can be fetched in the custom report through this FM.

Or any other FM we require to do the needful.

Regards

Suman