Не работает роутинг

 
function routes_crossposter()
{
  $routes[] = array(
    '_uri' => '/^add.html$/i',
    'do' => 'add'
    );
  $routes[] = array(
    '_uri' => '/^view.html$/i',
    'do' => 'view'
    );
  $routes[] = array(
    '_uri' => '/^delete([0-9]+).html$/i',
    'do' => 'delete',
    1 => 'message_id'
    );
 
  return $routes;
}
 

 
        //RewriteRule ^crossposter/add.html$ /index.php?view=crossposter&do=add
        $routes[] = array(
                            '_uri'  => '/^crossposter\/add.html$/i',
                            'do'    => 'add'
                         );