Return Array From An Event AS3

I got a question that is driving me crazy. I have a DIRECTORY_LISTING event, that is executed with the files in a directory. This code is n a method o a class that only does the return a array with this informations (the code is above). How can I add a return of this array on a method in the DocumentClass that invoke and receive this value?

Code:

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//Lista arquivos
public function listaArquivos(diretorio:File, nome_arquivo:String, lista_molduras:Array, index:int):Array{
  //Tenta fazer tudo isso
  try{
    //Seta o diretoório de molduras
    var directory = diretorio;
    directory.getDirectoryListingAsync();
    directory.addEventListener(FileListEvent.DIRECTORY _LISTING, listaHandler);

    //Percorre arquivos
    function listaHandler(evento):void{
      //Contador
      var i:int = 0;
      //Conteúdo
      var contents = evento.files;
      for (i = 0; i < contents.length; i++) {
        var nome:String = contents[i].name;
        var nome_array:Array = new Array();
        nome_array = nome.split("_");
        //Formata para ordenar
        arquivos_animacao.push ({nome:contents[i].name, tamanho:contents[i].size, ordem:nome_array[0]});
      }
      //Ordena para a ordem de númeração
      arquivos_animacao.sortOn("ordem", Array.NUMERIC);
      lista_molduras[index] = arquivos_animacao;
    }
  }catch(erro:ReferenceError){
  }
  return lista_molduras;
}

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I've reformatted your code to be properly indented, which reveals the major error.

Don't nest functions. You have listaHandler defined inside lisaArquivos. That does not cause listaHandler to be executed in a synchronous fashion. So lista_molduras will not have been changed by listaHandler by the time listaArquivos returns.

Why are you using getDirectoryListingAsync() in the first place if you want to get the listing in a synchronous fashion?