https://www.infopathdev.com:443/forums/41.aspxIf you're not sure where to ask your question, ask it here. If necessary, our moderators will make sure it gets classified in the correct board.enCommunityServer 2007 SP3 (Build: 31118.962)https://www.infopathdev.com:443/forums/thread/104678.aspxWed, 11 Nov 2015 11:20:30 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:104678eabrc0https://www.infopathdev.com:443/forums/thread/104678.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=104678Hello everyone, I have been searching for an answer to this but could not find any suggestions that would work for me. I would be really grateful if anyone could let me know how to achieve the following... I have a text box in a form and I need the users to enter the text in these specific formats: "REQ\d\d\d\d\d\d\d-\d" or "REQ\d\d\d\d\d\d\d-\d\d" or "INC\d\d\d\d\d\d\d\d\d\d" and cannot be blank. The "REQ" and "INC" can be either lower or upper case, but there shouldn't be any blank spaces anywhere in the reference. I have tried using the validation rules ("does not match pattern" with "or"/"and" for each expression) but it didn't work. I also tried using the "The expression" (not(xdUtil:Match(string(.), "REQ\d\d\d\d\d\d\d-\d"), etc.) and it also didn't work... Could my pattern be achieved?