Change Proforma file name without Eu Vat Addon
i need to customize the file name of Proforma invoice because different customers told me that for them it's a bit confused.
Now proforma has this name:
and official invoice this name:
I need to change the Proforma name like that:
*This is just an example of course.
With Eu Vat addon you can do this from admin panel, but i don't use Eu Vat addon, but this other addon: https://katamaze.com/whmcs/product/Billing-Extension
I tried to write to the extension developer but i disappeared in the last 3/4 months.
I think this change could be useful for all whmcs user that are not using Eu Vat addon.
Thank you in advance to all of you