Conotinuous page numbering doesn't works. After page no.19 no.1 comes!

Hi,

I have to make a document where the page numbering starts at the 9th page with page no.1. I have successfully made a new page style and it has worked till page no.19, but after no.19 the page numbering resets to no.1. How can I make it to be continuous again?

Thanks