9.3 $scope plusOne function issue

Language Help Angular.js
1

I am trying to add the plusOne function exactly as it was given but get an error. Any ideas? Here is what I have in MainController.js:

$scope.plus.One = function(index) { 
    $scope.products[index].likes += 1;
};
2

You have ‘$scope.plus.One’; it should be ‘$scope.plusOne’