Actionscript 3 :: Dynamically Creating A Text Area Onclick?

I want to add a text area on the click or a button, for example lets say if a person has multiple addresses and they want to add more address. When the user clicks 'add address' a new text area should appear.I have looked everywhere for the solution but no luck

Hear is the code that I have tried (and this could be very wrong):

import mx.controls.Alert;
import mx.events.CloseEvent;
private function createTextField(evt:Event):void{
var theTextField:TextField = new TextField();

[Code]...