PI How to Extract PDF as xsd:base64binary to Payload

Hello PI Experts:

We have created an RFC to extract PDF documents from the SAP DMS repository.

So far we are only able to see the XML tag in the successful Payload output but the the PDF data is not sent, here is one example below (but even when we have modified the RFC to output the xsd:base64binary at 2nd level still the same result):

Ideally, we would like to be able to accept as many images as the RFC can generate (unlimited) into an XML Payload since the requestor may request multiple documents on the interface screen. One PDF in XML would be good, many would be great!

Any thoughts that can be shared would be most appreciated! Criticism for not seeing the obvious also accepted!

Image may be NSFW.
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Image may be NSFW.
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Thanks

John (Jim)