Is there a way you can add elements dynamically to an existing array??

Question

hey guys... i need to add elements to an array dynamically... how do i do that?
for example... in one of my functions i do..
     for each(var item:Object in fileList){
          fileListArr.push(item);
and in a later function i need to add one more element to my fileListArr...
so i tried doing
fileListArr[indexNum].push({
     key:videoKey
so i need to have an array which resembles something like this...
Before adding elements...
fileListArr:
     [0]:  name:test1
            Size:12K
            caption:testing caption
            number:1
     [1]:  name:test2
            Size:12K
            caption:testing caption
            number:2
after adding key to array
fileListArr:
     [0]:  name:test1
            Size:12K
            caption:testing caption
            number:1
            key:xyxyyy11y1yy1y1y2y2u33n
     [1]:  name:test2
            Size:12K
            caption:testing caption
            number:2
            key:iiduudjmenri112jj2n4n3m2j1j21
any ideas?

Answer 1

hmm interesting... so i made the changes... i changed the array to arraylist and the code i have is as follows... but i still get an error... the error says ... "ReferenceError: Error #1056: Cannot create property key on flash.net.FileReference."
public var videoReference:VideoHandler;
public var fileRef:FileReferenceList = new FileReferenceList();
[Bindable] public var fileListArr:ArrayList = new ArrayList();
[Bindable] public var fileNames:ArrayCollection = new ArrayCollection();
public function selectionHandler(event:Event):void{
     fileRef.removeEventListener(Event.SELECT, selectionHandler);
     var numSelected:int = event.target.fileList.length;
     var fileList:Array = event.target.fileList;
     for each(var item:Object in fileList){
          fileListArr.addItem(item);
          fileNames.addItem({
               num: fileNames.length + 1,
               name: item.name,
               size: formatFileSize(item.size),
               status: ""
     var newListLength:Number = fileListArr.length;
     if(fileCounter > 0){
          loopList(fileCounter);
     else
          loopList(0);
public function loopList(value:int):void{
     //trace("looplist -->");
     if(value < fileListArr.length){
          _numCurrentUpload = value;
          file = new FileReference();
          file = FileReference(fileListArr.getItemAt(value));
          file.addEventListener(Event.COMPLETE, loadVideo);
          file.addEventListener(ProgressEvent.PROGRESS, fileProgress);
          file.load();
public function setUploadKey(event:ResultEvent):void{
     if(event.result.ThereWasAnError){
          Alert.show(event.result.ErrorMessages[0]);
     }else{
          videoKey = event.result.UploadKey;
          if(fileCounter >= fileListArr.length){
               trace("in if");
               fileCounter = 0;
               uploadLoopList(fileCounter);
          }else{
               trace("in else");
               //fileListArr[fileCounter - 1]['videoKey'] = videoKey;
-----> get an error here --->fileListArr.getItemAt(fileCounter - 1).key = videoKey;
               //fileListArr[fileCounter - 1] = [{key: videoKey}];
               loopList(fileCounter);