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NSTableView and keyPath



I'm trying to bind a tableViewColumn to an
NSArrayController.arrangedObjects.attribute in a controller object
thus:

bind to: file's owner
model key path: key.path.to.nsarraycontroller.arrangedObjects.stringAttribute

but the tableColumn remains blank. If I set up the NSArrayController
within the nib, all is well and it works fine. Why is this not working
using the Key Path? I know there's something missing, and that I'm
failing to comply with something quiet fundamental, but can't quite
put the finger on it.

Thanks.
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