I'm wondering if anyone knows how to restrict a document to only numbers at time of check-in. For example the PDM would allow a part named 1111111.sldprt but reject aaaaaaaaa.sldprt. It would also have to reject a combination file name like 111111aaaaaa.sldprt. I attempted to use the operators found here but it did not seem to work and the results were sporadic. I am using PDM Standard. Thanks for the help.