Flash 8 UI Components ERROR!

import mx.UIcontrols.*
var Pos:Object = new Object;
Pos.x = 18;
Pos.y = 18;
this.createObject("TextInput","ctiInput1",this.getNextHighestDepth());
this.createObject("TextInput","ctiInput2",this.getNextHighestDepth());
this.createObject("TextInput","ctiInput3",this.getNextHighestDepth());
this.createObject("Button","cbtResult",this.getNextHighestDepth());
ctiInput1.move(Pos.x,Pos.y);
ctiInput2.move(Pos.x,Pos.y+22);
ctiInput3.move(Pos.x,Pos.y+44);
cbtResult.move(Pos.x,Pos.y+66);
var oListener:Object = new Object;
cbtResult.addEventListener("click", oListener);
oListener.click = function (oEvent:Object):Void  {
	trace("Clicked"+this.ctiInput1.text+" || "+this.ctiInput2.text);
	this.ctiInput3.text = this.ctiInput1.text + this.ctiInput2.text;
	
}