Isolation mode

Larry, this is in relation to a script posted by Carlos in the main Illustrator forum only last week or so… I had done a little work on this idea too although didn't get about to posting it… What I was trying to do was 'screen grab' well image capture actually a selection from within AI and use it as part of the scriptUI. I have asked before about 'isIsolated' and got no real answer… When you put an object in isolation in the GUI all other art gets dimmed and this captures with image capture too plus exporting… It would have been nicer if I could have done this in script too, placing the emphasis on the object in question. Then letting the focus go back to normal… Here are a couple of pics that may explain better what I mean…

Some junk and an isolated object…

Normal mode…

But is this what 'isIsolated' is even referring too? It's a property of all page items and I can set & get without errors yet nothing happens? I can post the script too if you need see what I was monkeying about with…? It works in my CS5 but this would be nice to know how to do if its possible?