How can I return back to the previous form page from the PRE_SUBMIT event with form values?

[Manasmd]

I have a custom Entity for a simple basic CRUD operation. The form is rendering fine and works well. However, I am doing some custom validation in the PRE_SUBMIT and would like to redirect back to the form page with user's previously inserted values.

I have tried it through the URL params and also sessions but both doesn't work.

  $builder->addEventListener(FormEvents::PRE_SUBMIT, function (FormEvent $event) {
    $data = $event->getData();
    if($data['name'] == "unavailable"){
   
     // I would like to redirect back to the form page and pre-fill the name field.
     // I have tried to set it through URL params and as well as in the session (both doesn't) work.
     
     
    }
  }