Problem with Rule while using FM

[Abir Kundu]

Hi,
      In our current project, I've created one Function Module
(Z_FIND_MANAGER) to find the manager, using the function templet of
SWX_GET_MANAGER. It was working fine with my custom rule, and was returning
the Manager(s) user-ids.
      Now according to the changing requirement, we also need to send back
the PERNR of the manager, along with the UserID. But if I add one exporting
table parameter containing the PERNR(s) to my FM, the FM is not working
with rule. Error reads, the Function module does not meet the workflow
conventions.
      Is there any way-out that I can uses the FM in the rule as well as
return the PERNR table to the workflow.

Thanks and Best Regards,
Abir Kundu
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