InfoPath Dev

Yes, I use formula to name the file. Today I find it it work correctly. Thanks for your help.

Thanks for your answer. The file is saved in SharePoint 2010 Fundation but without form service, I want use the form to deploy workflow. Is that a good way to use infopath ? I have try to use "Submit using a data connection" on a button, but the result is save as a new file, I also try to use the code "thisXDocument.Save()", ...

I have disable the "save" and "save as" in tools bar. But I want create a button to save file to the original path after user modify the file. Could you tell me how to create the button with JS or VBS or C+ or some other way ?