DataBinding update notification

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folks - writing mvc-based flex application view (in case tree component) bound model (in case xml object). setting data model's bindable property , tree showing data. fine. want expand tree user when data first appears. i've found can call tree.expandchildrenof(rootnode, true) accomplish task problem if can't find events fired when dataprovider changes. tree smart enough realize when i've changed model's xml , reflect changes in tree there not event tells me has happend can call expandchildrenof?

does have other suggestions how accomplish this?

thank in advance.

ryan



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