Hello @NabilEnn
About the page# numbers 
… “Let’s go in parts! as Jack the Ripper said.”
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You aren’t currently giving too much feedback. Like if the workflow’s latest update is currently working for you, or if it’s somehow satisfying your expected output.
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Matching the page with regex needs some context together with the name/patient extract. Then, if its related to this particular pdf sample; you shouldn’t split your solution in more than one topic. Because you will have to integrate the solution at some point.
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Working with regex requires a representative sample and use context. The current ‘Dummy Filev1.pdf’ is a one page pdf, then it will be hard to test multi-pages.
Furthermore, the solution has different non functional requirements depending on page distribution: one pdf per page, or multipage pdf…
I think that I can deliver any of these outputs, even with this non representative sample. I have previous developments deployed with similar requirements… so I can figure out how it will perform on different functional requirements. But my dedicated time is limited too; so working without a clear target is not good for both of us either.
Please comment.
BR