Is it Possible to do a lookup in Webi 4.0

Hello Gurus,

I have a requirement where I need to lookup some document numbers in a particular table say BSIK and BSID.

now I need to find out those documents which are cleared or partially cleared, for which it would be having the invoice reference number and fiscal year.

Please let me know if this could be achieved in Webi.

Note: I have a function module on which the universe is built and it has all the data/records from BSIK and BSID tables in ECC. No BW in between.

Or

The only option would be doing some changes and calculations at the ABAP level i.e. in the function module.

Regards

Sandeep