       if progress < @duration
         @rAF = requestAnimationFrame @count
       else #progress < @duration
+        @isRunning = no
         @callback() if @callback?
 
     ###*

      @decimals  = Math.max 0, @options.decimals
      @dec       = 10 ** @decimals
      @duration  = @options.duration * 1000
      @options.grouping = no if @options.separator is ''

      if @options.autostart

    ###
    stop: ->
      cancelAnimationFrame @rAF
      @isRunning = no

      @

