Magento

I added a customer address attribute as written in some posts here. While working fine while editing adresses in both backend and frontend (it is saved in the database and retrieved), i can’t manage to get this attribute on emails or pdfs.I modified the importCustomerAddress() method, as described and have the attribute in sales_quote_address_varchar

I suppose the best way would be to add this attribute to the billingaddress. Does anybody know how to do this?
I tried tu use getBillingAddress()->getTax_number() in the pdf-section which does no error but doesn’t retrieve a value while in address-editing getAddress()->getTax_number() works fine.

Any suggestion ?

Thanks