[udaaff]

var b:Examp = new Examp();
b.setNames("good bye");
this.addChild(b);

package 
{
 
	import flash.text.*;
	import flash.display.*;
 
	public class Examp extends Sprite 
	{
 
		public function Examp() 
		{
			super();
 
			var f:TextFormat = new TextFormat();
			f.font = "Tahoma";
 
			a = new TextField();
			a.type = "dynamic";
			a.text = "Привет";
			a.textColor = 0xff0000;
			a.border = true;
			a.background = true;
			a.backgroundColor = 0x00ff00;
			a.setTextFormat(f);
			a.defaultTextFormat = f;
			a.autoSize = TextFieldAutoSize.LEFT;
			addChild(a);
 
			setNames("Hellow");
		}
 
		private var a:TextField;
 
		public function setNames(nameText:String):void
		{
			a.text = nameText;
		}
 
	}
 
}

С AS2 знаком...

Не заметно.