How to customize user tabs in member's area

Hi, my site.php is

Am_Di::getInstance()->hook->add(Am_Event::USER_MENU, 'onUserMenu');
function onUserMenu(Am_Event $event)
{
$event->getMenu()->addPage(
array(
'id' => 'pageid',
'label' => 'Blog Infoconcours',
'uri' => '/blog',
'order' => 1000
)

);

I whant to
// Remove a tab
And
// Add sub item to exiting tab

But http://www.amember.com/docs/How_to_customize_user_tabs_in_member's_area
Is dont work

hi

I want to del Renouveler/Ajouter un abonnement
and add

array(
'id' => 'pageid',
'label' => 'Wiki',
'uri' => '/wiki',
'order' => 809
)

hear
{
$event->getMenu()->addPage(
array(
'id' => 'pageid',
'label' => 'Blog Infoconcours',
'uri' => '/blog',
'order' => 1000
)

);