Fnd_Gen_FileName

            Fnd_Gen_FileName (path) ➔ Text

              Parameter                 Type               Description
              path                      Text               Full path name
              Function result           Text               File name at the end of the pathname

            To get the name of a file from a full file path, pass the path to this function.
                 $title:=Fnd_Gen_FileName (Document)
                 SET WINDOW TITLE($title)