How to use setNamespace in multiple authentication?

Hi all,

I want to be able to tell between users who logged into my Admin module and users who logged into the Front module.

I added this code to the SignInFormFactory

$this->user->getStorage()->setNamespace('backend');
\Tracy\Debugger::barDump($this->user);

		$form->onSuccess[] = function (Form $form, $values) use ($onSuccess) {
			try {
				$this->user->setExpiration($values->remember ? '14 days' : '20 minutes');
				$this->user->login($values->username, $values->password);

				//MY CODE
				$this->user->getStorage()->setNamespace('backend');
\Tracy\Debugger::barDump($this->user);
				//MY CODE

			} catch (Nette\Security\AuthenticationException $e) {
				$form->addError('The username or password you entered is incorrect.');
				return;
			}
			$onSuccess();
		};

When I dump $this->user the namespace is set to ‘backend’ but when I dump the logged user elsewhere, the namespace is set back to ''.

Could you tell me how to use the setNamespace to differentiate between logged users?

Thanks :)