Progress bar for each execution of file completed?

Based on the help file, the example of the progress bar is progress with "sleep(1000)" which is 1 second.

Any idea to create a progress bar for each of my file execution complete?

Case $msg = $btn_action
         If $ordner <>0 then
            For $i In $ordner
               Local $oExcel = _ExcelBookOpen($i);open the excel File
               sleep (1000)
               _ExcelBookClose($oExcel)
            Next
         endif
   EndSelect
WEnd 

Based on the above code structures, I will receive array of files stored in $ordner. It will keep on looping until there is no files.

Any idea to create a progress bar which will be updated upon each file execution is complete?