Display a module in a custom field

-- HikaShop version -- : 2.6.1
-- Joomla version -- : 3.4.8
-- PHP version -- : 5.4.45
-- Browser(s) name and version -- : opera 34

Hi,
my client wants a big accordion full of information in the bottom part of the product page, like here:
I can display a module in the description using shortcode, but it seems I can't get the same thing to work in a custom field, not even a wysiwyg type one. Is such a thing possible or should I go about it another way?

Thanks,
Irina

Thanks, that did it!