anchor.diff:      counter = '$minute:$second';
     }
   
  -    
  +  void setStartTime(string at){
  +    print(at);
  +    var value = int.parse(at, onError: (source) => null);
  +    if (value != null){
  +      startAt = value*60;
  +    }
  +  }
   
   }
positive.code: 
  @View(template: '''
  <p>Clock: <i>{{ counter }}</i></p>
  <button (click)="start()" id="startButton">Start</button>
  <button (click)="stop()" id="startButton">Stop</button>
  <button (click)="reset()" id="startButton">Reset</button>
  ''')
  
  class Clock{
    String counter='25:00';
    Stopwatch watch = new Stopwatch();
    Timer timer;
  
negative.code:   }
  
    void updateTimeRemaining(Timer _) {
      var s  = startAt - watch.elapsedMilliseconds~/1000;
      var m = 0;
      
      if( s < 0){ 
  