[Zope-dev] how to preserv information

[Champier]

Hi,   I'm a new zope programmer.   I created a page which show different products (from a oracle database) which can be selected (products are shoiwn in checkbox format).   As I have a lot of product I also manage button ('Next' and 'previous')   The proble is : When I select some products from on page and then I use the button 'next' or 'pervious I lose the selected product of the last page..   Is someone can help me and give me some solution ?? Thanks for your help