Is it possible in Extendscript/Javascript to 'Outline Stroke' a path

I'm trying to achieve the same command as enacted by Object > Path > Outline Stroke.

I can't find any reference to a method for this in the Javascript reference PDF, and you can't trigger menu commands in Javascript.

Applescript allows you to access the menu commands, so I wrote this:

tell application "Adobe Illustrator"

    set thisDoc to current document

    set locked of layer ("walls") of thisDoc to false

end tell

tell application "System Events"

    click menu item "All" of menu "Select" of menu bar item "Select" of menu bar 1 of process "Adobe Illustrator"

    click menu item "Outline Stroke" of menu "Path" of menu item "Path" of menu "Object" of menu bar item "Object" of menu bar 1 of process "Adobe Illustrator"

end tell

But it has a very annoying problem: if you run the script form within Illustrator the 'Outline Stroke' command fails. But, if you run the script in the Applescript editor with the illustrator document open it works. Which is just plain weird. If anybody understands why this is the case I'd love to hear the reason (and fix).

If anybody has any ideas for successfully outlining strokes in either Javascript or Applescript please respond.

Thanks,

Barry