Customer VAT number on the invoice

-- HikaShop version -- : 3.3.0
-- Joomla version -- : 3.8.5
-- PHP version -- : 7.0

Hi, I would like to add the VAT number of my customer in the invoice, under the phone number, in the address field for billing, I have already created the default address_vat field, so that my client compiles it compulsorily during registration, we have generated the first order, but in the invoice the VAT registration field does not appear, how can I resolve?