Hi Stephan,
After reading out the PDF you need to get the data from it.
How to get the data from it, depends on how it is structured.
If it is something like this:
Invoice Number: 3423423423
then you can look for the text ""Invoice Number: "" with InStr in a calculation stage to get the postion, and read out everything that follows.
If it is differently structured, you need to use a different approach.
RegEx is always a great thing to use when extracting data. If you search the forum, you'll come accross some nice examples.
Feel free to post an (anonymized) version of the text of your PDF, as it appears in your DataItem, if you need further hints & tricks.