Update Entity with a new field in a controller - Symfony 6 - php

Question

I'm new in Symfony, and I am trying to calculate the average of the customer reviews at the controller level.
I did a dump in the foreach shown below, where I have the entity as I want, but in the return of the postman the field I added does not exist in my object.
nb: I don't have this field in my user table
My controller:
public function __invoke(UserRepository $rep, Request $request , EntityManagerInterface $em)
{
$user = $this->get('security.token_storage')->getToken()->getUser();
$dataUser = $rep->findUsersData();
$Reviews = $rep->findUsersReviews($user->getId());
$countReviews = count($Reviews);
$starsValues = 0;
foreach($Reviews as $review){
//dump($review);
$starsValues += $review['stars'];
}
$reviewsuservalue = $starsValues / $countReviews;
foreach($dataUser as $key => $userForeach){
if($userForeach->getId() == $user->getId()){
$userForeach->setReviewsuservalue($reviewsuservalue);
//dump($dataUser[$key]->getReviewsuservalue());
$em->persist($userForeach);
$em->flush();
//dump($em->flush());
}
}
return $this->json($dataUser);
}
and I add this in my entity:
private $reviewsuservalue;
and this is my getter & setter in the mentioned entity
public function getReviewsuservalue(): ?float
{
return $this->reviewsuservalue;
}
public function setReviewsuservalue(float $reviewsuservalue): self
{
$this->reviewsuservalue = $reviewsuservalue;
return $this;
}