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Add item to a list from TextInput

<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">     <mx:Script>                               import mx.events.CollectionEventKind;             import mx.events.CollectionEvent;             import mx.collections.SortField;             import mx.collections.Sort;             import mx.collections.ArrayCollection;                          private var index:Number = 0;                          public function collectionChange(event:CollectionEvent):void             {                 switch (event.kind)                 {                     case CollectionEventKind.ADD:                         myTextArea.text += "Item Added\n";                         break;                     case CollectionEventKind.REPLACE:                         myTextArea.text += "Item Replaced\n";                         break;                     case CollectionEventKind.REMOVE:                         myTextArea.text += "Item Removed\n";                         break;                 }             }                          public function addItem():void             {                 myCollection.addItem({label: myTextInput.text, data: index});                 index++;             }             private function removeItem():void             {                 if (myList.selectedItem != null)                     myCollection.removeItemAt(myList.selectedIndex);             }                         </mx:Script>          <mx:ArrayCollection id="myCollection" collectionChange="collectionChange(event)" />          <mx:TextInput id="myTextInput" />     <mx:List id="myList" dataProvider="{myCollection}" width="200" height="200" />     <mx:Button label="ADD" click="addItem()" />     <mx:Button label="REMOVE" click="removeItem()" />     <mx:TextArea id="myTextArea" width="200" height="200" />      </mx:Application>