         else
             @element.removeClass('hint--info')
             @element.addClass('hint--error')
+        return
     _off: () ->
         @element.removeClass('hint--info')
         @element.removeClass('hint--error')
         @element.removeClass('hint--top')
-        @attrs.$set('data-hint', '')
+        @element.removeAttr('data-hint')
+        return
     _set: (text) ->
         @attrs.$set('data-hint', text)
+        return
     init: () ->
         #if @enabled()
         ###

                @_off()
        else
            @_off()

# the internal Hint class for bootstrap tooltip
# class HintTooltip


                    # model -> UI
                    ngModelCtrl.$render =  () ->
                        element.toggleClass('editable', !options.readonly)
                        vHint.apply attrs
                        return

