new page with auto-increment id

Hi all -- I'm working to create an xwiki app that allows you to press a button, and it sends you to a new page with a generated name (i.e. not based on any user input). I can get this to work with a page name generated from the current time in milliseconds, but that gives me a really long number. I'd like to have the generated name be a number which is incremented any time a new page is created. Thus I would have pages Page_1, Page_2, Page_3, etc. I looked in our scriptlets section, but didn't see anything close. Thanks ... shawn.