Total number of pages wrong

I use this code to print documents with sequential numbering. The sequential numbering is printed at the bookmark "Number"
The pagenumbering of the document is placed in the footer just like I would do in a non-VBA document.
However the numbers, when a 3-paged document is printed, show up like 1 of 1, 2 of 2 and 3 of 3.

Does anyone know what I'm doing wrong?
(any suggestions on the code are also welcome )

This is the code:

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Solved it!
http://word.mvps.org/faqs/apperrors/pagexofy.htm

I had to disable background printing:

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