Auth Shield and multilanguage

Hello all,
I use SHIELD for authorization
My application is multilingual
The [users] table has a [multi] column
How do I set a session from the [multi] column after logging in.
I use entry in:

PHP Code:

BaseController.php
//...

public function initController(RequestInterface $request, ResponseInterface $response, LoggerInterface $logger)
{
    // Do Not Edit This Line
    parent::initController($request, $response, $logger);

    // Add these lines
    $session = \Config\Services::session();
    $language = \Config\Services::language();
    $language->setLocale($session->lang);
}
//... 


Thank you