JsonView Konfiguration des Outputs

Hallo Leute irgendwie hat bei mir die Methode $this->view->setConfiguration überhaupt keine Auswirkung.
was mach ich falsch?

PHP-Code:

---

public function listAction(){
       $this->view->setVariablesToRender(array('recipes'));
       $recipes = $this->recipeRepository->findAll();

       $this->view->setConfiguration(array(
               'recipes' => array(
               '_only' => array('title')
           ),
       ));

       $this->view->assign('recipes', $recipes);
} 


---

Output: [{"category":null,"description":"","favorite":true,"pid":6,"preparation":"zubereitung","rating":0,"recipenr":1,"title":"Reisterrine
im Passionsfruchtmantel mit frischen Himbeeren","uid":1,"viewed":0}]

JsonView Konfiguration des Outputs