In order to know what you're doing incorrectly you'll need to post some code. Binding to ArrayCollection.length normally works fine.
<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"; layout="vertical"> <mx:Script> <![CDATA[ import mx.collections.ArrayCollection; [Bindable] private var a:ArrayCollection = new ArrayCollection(); ]]> </mx:Script> <mx:Label text="{a.length + ' items'}" /> <mx:Button label="Add" click="a.addItem(null)" /> <mx:Button label="Remove" click="if (a.length) a.removeItemAt(0)" /> </mx:Application> HTH, Sam ------------------------------------------- We're Hiring! Seeking a passionate developer to join our team building Flex based products. Position is in the Washington D.C. metro area. If interested contact [EMAIL PROTECTED] -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of gary_mangum Sent: Friday, September 21, 2007 4:33 PM To: [email protected] Subject: [flexcoders] "length" binding not triggered for ArrayCollection.removeItemAt() I have a TileList bound to an ArrayCollection and a Label bound to the "length" property of the ArrayCollection. When I call removeItemAt() on the ArrayCollection, my TileList updates correctly, but my Label does not ever get triggered. What I am doing incorrectly? Thanks, Gary
