crisis13 - 2013-09-04

Hello, i need a plugin that automaticly gives a "next name"
Like starting with 'Name000.txt' the next save will be automaticly named 'Name001.txt'
Is there such a plugin or other possiblility available ?
A "save next name" BUTTON would be a help, if this button can get a prefix variable like
%name%%autonumber%.%ext%
i hope it already exist some where and that it will be easy to use.