UIX is a J2EE based MVC framework. From your description, it's not quite clear what you want to do. Are you the UIX programmer? In that case, your best bet would be to put logging into your application (if UIXML supports it - I don't know anything about UIXML).

Are you looking for a way to automate interaction with a UIX page someone else has written? In that case, I suggest you look at WWW::Mechanize.

Do you want to save values you entered into UIX page by hand on your local machine, so that you will have a record of your submission? In that case, either use WWW::Mechanize to enter the values for you (and log them along the way), or use copy/paste to save the contents of the filled out form into a file.