Intel XDK - Only one Checkbox - Ionic + Angular JS

ionic-v1
1

i try use this example: http://codepen.io/thompsonemerson/pen/jPvgoy

my view:

<ion-view view-title="{{language}}">
    <ion-content>
        <div class="text-center">
            <div class="padding">
                <h3 class="balanced">Alterar idioma</h3>
            </div>
            <ion-list>
                <ion-item class="item-checkbox" ng-repeat="item in itens">
                    <label class="checkbox">
                        <input type="checkbox" ng-model="item.checked" ng-click="updateSelection($index, itens, item.title)">
                    </label>
                    {{ item.title }}
                </ion-item>
            </ion-list>
        </div>
    </ion-content>
</ion-view>

my custom.js

(function(){
“use strict”;
angular.module(‘myApp’, [‘ionic’])

    .controller('initCtrl', function($scope){

        $scope.itens = [
            { title: "Português (BRASIL)", checked: false },
            { title: "Inglês (EUA)", checked: false },
        ];

        $scope.updateSelection = function(position, itens, title) {
            angular.forEach(itens, function(subscription, index) {
                if (position != index)
                    subscription.checked = false;
                    $scope.selected = title;
                }
            );
        }

    });
})();