Show text for specific customer group in Prestashop 1.7

[Ramage]

I would like to show the text in the basket for customer in groups with the ID number 4, 6, 7, 8,

In cart-summary.tpl file I write

if $logged}{if $customer.id_default_group|in_array:[4, 6, 7, 8]}Test{/if}{/if}

But I get errors

[Ramage]

Thanks for reply!
Logged working, but $customer.id_default_group returns  always "0". I use supercheckout from knowband. How do I get $customer.id_default_group to work?