Change to the underlying model does not update display AdvancedDataGrid

I'm working on a project of Cairngorm MVC. A part of the application has an AdvancedDataGrid ("ADG") with two levels of available drilling - we will call the highest level 'States' and the 'cities' of second level. The default is 'States' only - the top-level nodes are closed. When I add a new 'State' to the underlying model, it appears correctly in the ADG. However, when I add a new 'city' to the 'State' that has been created, the open node icon is not displayed, even if the data is there. I know that the data is there, because when I click to open another node, the icon appears suddenly to the top-level node, that I just created. I can't understand why this is happening or how to fix it. I need to open the node icon to display when I add a child to it.

I tried the validateNow() and invalidateDisplayList() on the ADG methods, but they do nothing...

Please make suggestions.

have you tried invalidateList?

Tags: Flex

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