Action Script 3. Restore timer to 0 after game restart - actionscript-3

Question

I'm creating flash game, here is timer which counts how long player playing at current level. And here is "Restart" button, I need to restart timer (count from 0) after this button is clicked.
Here is my timer's code:
public function MemoryGame()
{
addChild(CardContainer);
tryAgain.addEventListener(MouseEvent.CLICK, restartGame);
timer = new Timer(1000); //create a new timer that ticks every second.
timer.addEventListener(TimerEvent.TIMER, tick, false, 0, true); //listen for the timer tick
txtTime = new TextField();
addChild(txtTime);
tmpTime = timer.currentCount;
timer.start();
}
private function tick(e:Event):void {
txtTime.text = showTimePassed(timer.currentCount - tmpTime);
var format:TextFormat = new TextFormat();
format.font = "Verdana";
format.color = 0xFF0000;
format.size = 16;
format.bold = true;
//txtTime.x = 250;
txtTime.width/2;
var stageCenter_x:Number = stage.stageWidth/2;
var stageCenter_y:Number = stage.stageHeight/2;
var textCenter_x:Number = txtTime.width/2;
var textCenter_y:Number = txtTime.height/2;
txtTime.x = stageCenter_x - textCenter_x;
txtTime.autoSize = TextFieldAutoSize.CENTER;
txtTime.defaultTextFormat = format;
}
function showTimePassed(startTime:int):String {
var leadingZeroMS:String = ""; //how many leading 0's to put in front of the miliseconds
var leadingZeroS:String = ""; //how many leading 0's to put in front of the seconds
var leadingZeroM:String = "";
var time = getTimer() - startTime; //this gets the amount of miliseconds elapsed
var miliseconds = (time % 1000); // modulus (%) gives you the remainder after dividing,
if (miliseconds < 10) { //if less than two digits, add a leading 0
leadingZeroMS = "0";
}
var seconds = Math.floor((time / 1000) % 60); //this gets the amount of seconds
if (seconds < 10) { //if seconds are less than two digits, add the leading zero
leadingZeroS = "0";
}
var minutes = Math.floor((time / (60 * 1000) ) );
if (minutes < 10) { //if seconds are less than two digits, add the leading zero
leadingZeroM = "0";
}
//60 seconds times 1000 miliseocnds gets the minutes
return leadingZeroM + minutes + ":" + leadingZeroS + seconds + "" + leadingZeroMS ;
}
When I use: removeChild(txtTime); and later addChild(txtTime); timer not restarting just removing for the time, later adding again and continue time counting. How to restore timer to 0? Any ideas? Thank you very much.
EDIT:
Timer must resets when restartGame() function is used.
When I use this - nothing happens.
public function MemoryGame()
{
addChild(CardContainer);
tryAgain.addEventListener(MouseEvent.CLICK, restartGame);
timer = new Timer(1000); //create a new timer that ticks every second.
timer.addEventListener(TimerEvent.TIMER, tick, false, 0, true); //listen for the timer tick
timer.addEventListener(TimerEvent.TIMER, resetTimer);
txtTime = new TextField();
addChild(txtTime);
tmpTime = timer.currentCount;
timer.start();
}
function restartGame(e:MouseEvent):void
{
timer.addEventListener(TimerEvent.TIMER, resetTimer);
}
function resetTimer(event:TimerEvent):void{
timer.reset();
timer.start();
}
When I use this - timer stops and continue counting, but not reseting.
function restartGame(e:MouseEvent):void
{
timer.reset();
timer.start();
}
What's wrong?

Answer 1

You can use
timer.reset();
to reset it and then start it again with:
timer.start();
See docs for more info