How can I add a report interconnect to the R31410 to run a custom UBE?

I am trying to add a report interconnect to run a custom UBE from the R31410. I am trying to use the work order number  (DOCO). The custom UBE is called but the work order number is not getting passed to the called UBE so the report runs and ends with "No data selected". Is there a way to add a custom UBE to the R31410 to use the work order number? I would really appreciate any help available. Thanks so much.