AngularJS with Facebook SDK

I have a problem with angularjs.

I want to return values within the Facebook SDK functions but will not let me get them in variables.

The "perfil_nombre" and "perfil_foto" the variables returned as "undefined" and wish to send to the scope.

Any chance? I'm totally lost.

Excuse my bad English.

login.controller('inicio_ctrl', function($scope, $http, $timeout, $window)
{
      var laspaginas;
      var response;
      var perfil_foto;
      var perfil_nombre;
      var resp;
      $scope.FBLogin = function()
      {
        FB.login(function(response) 
        {
            if(response.authResponse) 
            {
                FB.api('/me', function(response) 
                {
                    perfil_nombre = response.name; //<<<<<-------- good
                    FB.api('/me/picture?redirect=false', function(resp) 
                    {
                       perfil_foto = resp.data.url; //<<<<<-------- good
                    });
                });
            } 
            else 
            {
             console.log('User cancelled login or did not fully authorize.');
            }
        }, 
        { scope: 'email, public_profile, manage_pages,publish_pages,read_insights,user_friends, publish_actions'});
        $scope.perfil_foto = perfil_foto; //<<<<<-------- undefined
        $scope.perfil_nombre =  perfil_nombre; //<<<<<-------- undefined
});