In an AppleScript, can compression level high be used when saving an image as a JPEG?

Question

When using AppleScript to save a copy of an image file as a JPEG on OS X 10.6 Snow Leopard, can "compression level high" be used in the code, or can only "compression" be used?
The part of the AppleScript dictionary for Image Events indicates that "compression level high", "compression level low", and "compression level medium" can be used, but when I type any of those three in the code and try to save the AppleScript file, the below error is displayed, and the word "level" is highlighted in the AppleScript Editor:
Syntax Error
Expected end of line, etc. but found identifier.
-John

Answer 1

you need to open the image in image events before you can save it as a different format.  you have to make a distinction between the image file (a file system object) and the image itself (the data that is the digital representation of the visual image).  what you want to do is open the image file in image events to extract the image data, then resave the image data in the new format.  looks something like this (changing just the last bit of your script):
set theImage to choose file with prompt "Please select an image file:" of type "public.image"
-- other stuff...
tell application "Image Events"
          set theImageData to open theImage
  save theImageData in newPathToSave as JPEG with compression level high with icon
end tell