                 
                 self.scheduleLocalNotification(self.targetDate!)
                 
-                self.rx_timer_disposable = Observable<Int>
+                self.timerDisposable = Observable<Int>
                     .timer(1.0, period: 1.0, scheduler: MainScheduler.instance)
                     .subscribeNext({ seconds in
                         self.refreshTotAndTimer()
                     })
-                self.rx_timer_disposable?.addDisposableTo(self.disposeBag)
+                self.timerDisposable?.addDisposableTo(self.disposeBag)
                 
                 
                 self.timerFace.hidden = false

            }
            .subscribeNext { value in
                self.startStopButton.setTitle("Start Timer", forState: .Normal)
                self.rx_timer_disposable?.dispose()
                self.rx_timer_disposable = nil
                
                self.targetDate = nil
                self.cancelLocalNotifications()

    var targetDate: NSDate?
    var degrees = 0.0
    
    var timerDisposable: Disposable?
    
    override func viewDidLoad() {
        super.viewDidLoad()
