unsetting a session through zend view?

[php_begins]

I need to store lot of errors separately like $_SESSION['client_error'],$_SESSION['state_error'] etc. According to zend documentation do I have to store it like this for each error?

 

$client_error = new Zend_Session_Namespace(''client_error);
$state_error = new Zend_Session_Namespace('state_erro'); and so on?

 

This is my code in the controller.

 $this->view->state_error_message=$state_error;

 

After I echo $this->state_error in the view I want to unset it.