Furqan,
If you're on BOXI3.x, then it cannot be done in Webi, only as a Deski VBA solution. It's just a (frustrating) limitation of the product. I've usually gone with concatenating the Tab name and the page number to produce a unique overall page number, the equivalent of a book starting at page 1 for each chapter. Not ideal but the best you can do if the number of pages vary and you're on Webi.
Sorry it can't be a more helpful answer, but it is unfortunately the correct one. I look forward to seeing if this imrpoves in 4.1 when we move on to it after this project.
