ActionScript 3.0 :: Pass A Parameter To The Constructor Function

I´d like to know how could use the Timer class extended.I´m trying to pass a parameter to the constructor function, so I can use it inside the listener.
 
Here´s example:
 
[CODE]
package { import flash.utils.Timer import flash.display.DisplayObject public class ChangeColorTimer extends Timer {    public static const CHANGE_COLOR:String = "changeColor";    public var obj:DisplayObject    public function ChangeColorTimer(delay:Number, repeatCount:int, obj:DisplayObject ) {   super(delay, repeatCount)   this.obj = obj   } } }
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That was the ChangeColorTimer that extends Timer.Now, I´d want to know how would I use ChangeColorTimer.I thought it was the same as using Timer.I´ve tried this:
 
[CODE]
public function changeColor(mc:MovieClip):void  {   var colorTransform:ColorTransform = new ColorTransform()   colorTransform.color = 0xEE0000   mc.transform.colorTransform = colorTransform   var changeColorTimer:ChangeColorTimer = new ChangeColorTimer(400, 1, mc)   changeColorTimer.addEventListener(ChangeColorTimer.CHANGE_COLOR, setNormalColorListener)   changeColorTimer.start()     }  private function setNormalColorListener(e:Event):void{   trace("called")        }
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I called changeColor, but, I don´t get "called" in the output from the setNormalColorListener listener.