How to add field "Original" on invoices, according bulgarian law?

How to add field "Original" on invoices, according bulgarian law?

Hello,

I am using since 2 months the zoho invoice, everything works so far well - automatic invoice e-mail sending, etc. etc. So far I really love the software and it is the best one I ever used.

Unfortunately there is one problem I still found no solution for:

In Bulgaria the law say that when you invoice local companies you have to place the text Original on visible place in the invoice that is sent to the customer, then you will need to have Copy on the invoice that you will keep for your own accountancy. 

Zoho invoices don't allow putting this text there, that is why it makes the software not compatible with bulgarian law if you use it for Bulgaria->Bulgaria transactions.

I figured out one workaround - you can set to place this customized text in the Print action - there you can make two pages of the invoice - one with Original and one with Copy, but you will need to print->print as pdf by yourself the invoice and send the invoice manually by yourself to the customer.

My question: Is there any way to put in the original invoice text Original, but to able to download this for my accountant with text Copy instead?

It would be also okay if the text Original appears automatically on the invoice, but then I manually change it to Copy when I need to download the invoice and give it to my accountant.