Problem with $ionicScrollDelegate

Hello guys ,
I developped a large application photos managements with Ionic
the inputs of my application is not always put at the right place according to the keyboard (suggestions lists etc).
I told myself that I was going to manage the positions with $ionicScrollDelegate when the input will be focus.

And yesterday , i had some problem with the $ionicScrollDelegate :s

i have this line of code for the beginning of my js controller :

Phory.controller('MyCtrl', ['$scope', '$ionicModal', '$ionicViewSwitcher', function ($scope, $ionicModal, $ionicViewSwitcher,$ionicScrollDelegate, $translate) {

  $scope.scrollTop = function() {

And this line of code for the html side :

                <button class="button button-add clear" ng-click="scrollTop()"> 
                    {{'shareStoryButton' | translate}}

** when I click the button I have this error happens : **
( ) :

TypeError: Cannot read property ‘scrollTop’ of undefined
at l.$scope.scrollTop (app.js:287)
at ionic.bundle.min.js:229
at ionic.bundle.min.js:386
at l.$eval (ionic.bundle.min.js:156)
at l.$apply (ionic.bundle.min.js:157)
at HTMLButtonElement. (ionic.bundle.min.js:386)
at HTMLButtonElement.c (ionic.bundle.min.js:63)
at n (ionic.bundle.min.js:22)
at t (ionic.bundle.min.js:22)
at HTMLDocument.l (ionic.bundle.min.js:22)ionic.bundle.min.js:133 (anonymous function)ionic.bundle.min.js:107 (anonymous function)ionic.bundle.min.js:157 l.$applyionic.bundle.min.js:386 (anonymous function)ionic.bundle.min.js:63 cionic.bundle.min.js:22 nionic.bundle.min.js:22 tionic.bundle.min.js:22 l

I use as script :

    <meta charset="utf-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
    <link href="lib/ionic/css/ionic.css" rel="stylesheet">
	<!-- General styles -->
    <link href="css/style.css" rel="stylesheet">
    <link href="css/extraStyles.css" rel="stylesheet">
    <link href="css/styleIos.css" rel="stylesheet">
   	<!-- Roboto Google font -->
    <link href='css/roboto.css' rel='stylesheet' type='text/css'>
    <script src="js/ionic.bundle.min.js"></script>
    <script src="js/angular-translate.min.js"></script>
    <!-- cordova script (this will be a 404 during development) -->
    <script src="cordova.js"></script>
    <!-- your app's js -->
    <script type="text/javascript" src="js/app.js"></script>

the beginning of the ionic.bundle.min.js :

 * Ionic, v1.0.0-rc.2
 * A powerful HTML5 mobile app framework.

thank you in advance for the help !!!

SOLVED : [’$scope’, ‘$ionicModal’, ‘$ionicViewSwitcher’, … useless just to fuck the shit ^^"