WBS Element - Integrate with PR & PO Values

Dear Friends and Experts;

I have the following requirement. Please advise.

Report layout is :

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WBS Element, Actual, Commitment with drill down PR and PO documents.

PR value would be the u201Ccommitmentu201D and PO value (Invoice) would be the u201CActualsu201D. I aware of standard extractors for WBS element with respect to actual and commitments. But those extractors are based on project system and did not have MM documents.

Can anybody advise on this requirement, how i can model this requirment.

Regards

Saravanan Raju