Dont sent the $scope to the html

Hi friends I started to work in Angular few days ago, and I have this problem that I dont know how to fix it. My web is calling a controller.js and this controller call to an ajax function. The ajax function sent back a correct response, but I can't see it in the web. Here is the codes:

var myApp = angular.module('myapp',[]);
myApp.controller('ResolveProduct', ['$scope', function($scope) {
      productInformation = function($scope) 
      { 
          var something;
              $.ajax({
              type: "GET",
              dataType : "json",
              async : true,
              url : "/ajax/reference/200-B2",
          success : function(data){

              something = data.david;
              alert(JSON.stringify(something));
              $scope.helper = JSON.stringify(something);

          },
          complete : function($scope){
              $scope.helper = JSON.stringify(something);
              alert($scope.helper);
          }
      });

      };

}]);

This sent me a correct answer but when I do this on HTML I dont see the answer. (Even if the alert have all the info)

<div ng-controller="ResolveProduct">
                <input ng-model="info"></input> information is: {{ $scope.helper }}

                <input type="button" id="commitAction" class="slim-button" value="Resolve"  onclick="productInformation('')"/>
            </div>

Someone can help me please?