No luck trying to update badge on a tab, scoping issue?

Thanks Saurabh. That is what I ended up doing after a reply on another thread in stackoverflow

angular.module('controllers').controller 'NotificationsCtrl', ($scope, Notification)->
  console.log "NotificationsCtrl"
  $scope.$on "notification:received", (err,data)->
     $scope.$apply()
     $scope.Notification = Notification
  return