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The best article i read about Flash and javascript interaction can be found here .

Manipulating Flex ArrayCollection This shows you how to manipulate flex data structure called ArrayCollection. Assuming that you have the following data [Bindable] private var medalsAC:ArrayCollection = new ArrayCollection( [ { Country: "USA", Gold: 35, Silver:39, Bronze: 29 }, { Country: "China", Gold: 32, Silver:17, Bronze: 14 }, { Country: "Russia", Gold: 27, Silver:27, Bronze: 38 } ]); To retrieve let say Russia record, you can do the following /// get the Rusia Info ///// var _target:Object = medalsAC.getItemAt(2); To change its value, use the following codes ///// set the Rusia Info ///// _target["Gold"] = 50; medalsAC.setItemAt(_target, 2); If you want to add a new country let say Cz...