dynamic column to be added in exporting table of FM

Hi ,

I am trying to add dynamic column to an exporting table of RFC's FM.

How can I achieve it?

My requirement is :

if user gave an input in month - jan to feb then week wise column to be added in exporting table.

If user gave input in year 2015 to 2050 then month wise column to be returned in exporting table.

Thanks in advance.

Thanks & Regards,
Saurabh