Set iPhoto dates from filenames

tell application "iPhoto"
  set photoList to selection
  set theMonths to {January, February, March, April, May, June, July, August, September, October, November, December}
  repeat with thePhoto in photoList
    set thefile to (image filename of thePhoto)
    set newDate to current date
    set month of newDate to (item ((text 5 thru 6 of thefile) as number) of theMonths)
    set day of newDate to (text 7 thru 8 of thefile)
    set year of newDate to (text 1 thru 4 of thefile)
    try
      set time of newDate to ((text 9 thru 10 of thefile) * hours + (text 11 thru 12 of thefile) * minutes + (text 13 thru 14 of thefile))
    on error
      try
        set time of newDate to ((text 9 thru 10 of thefile) * hours + (text 11 thru 12 of thefile) * minutes + 0)
      on error
        set time of newDate to 0
      end try
    end try
    log newDate
    tell application "iPhoto"
      select thePhoto
      if date of thePhoto is newDate then
      else
        set date of thePhoto to newDate
      end if
      end tell
    end repeat
end tell