using joomla 1.5.25 / vm 1.1.19 / mm 2.12

using this logic on my breadcrumb module (module position)

module 19 (breadcrumbs) disabled, none for menus, position (breadcrumbs)

metamodule for breadcrumbs enbaled, all menus, position (breadcrumbs)

$vm = JomGenius("virtuemart");
if ( $vm->check( "pagetype not = shop.cart, shop.index" ) ) return 19;


given this my breadcrumb module 19 should not appear on my VM pages with shop.cart and shop.index but show on all other pages.

However, it does not.....

Module 19 in of itself works by itself