Exporting XML from Final Cut Pro using Apple Script

export.sh

#!/bin/sh

# 'Enable access for assistive devices' must be selected in Universal Access preferences.

osascript -e "
try
  tell application \"Final Cut Pro\" to activate
  delay 0.5

  tell application \"System Events\"
      tell process \"Final Cut Pro\"
          tell menu bar 1
              tell menu bar item \"File\"
                  tell menu \"File\"
                      tell menu item \"Export\"
                          tell menu \"Export\"
                              click menu item \"XML...\"
                          end tell
                      end tell
                  end tell
              end tell
          end tell
          tell its front window
              click button \"OK\"
          end tell            
          delay 0.5
          tell its front window
              click button \"Save\"
              delay 0.5
              try
                click button \"Replace\" of sheet 1
              on error error_message
              end try  
          end tell            
      end tell
  end tell
on error error_message
  tell application \"Final Cut Pro\" to display dialog error_message buttons {\"OK\"} default button 1
end try"