timeline:
import flash.events.KeyboardEvent;
import class1;
stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownListener);
var myObject:class1 = new class1();

class:
package
{
   import flash.display.MovieClip;

	public class class1 extends MovieClip
	{

		public function class1()
		{

			function keyDownListener(e:KeyboardEvent)
			{

				 abc.text = "absdfsad";

				abc.setStyle("color", 0xFF0033);

			}
			addChild(abc);
		}

	}

}