Thanks Mike!

Your answer is really helpful! I intend to use this "feature" to print some tickets and some "receipt books" that must have numbering, and I couldn't find any way to this on XDP.
I will follow your advice. Just another question, following your answer, I found a plug-in or script, for Inkscape that does merging with the variable data ( a CSV file), and my question is if could in some way use this plug-in/script on XDP?

Thanks again for your time Mike!

Tiago Lisboa