Include Woocommerce “billing_cpf” field in Certificate Builder

Hello,

By default, the certificate builder has the “student name” field that prints the user’s first and last name.

I use Woocommerce, which also records the “billing_cpf” and “billing_rg” fields for purchasing the user’s course, which here in Brazil are necessary for all certificates.

Is there any way to change the plugin code so that “student name” prints: “firstname + lastname + billing_cpf + billing_rg” ?

Or, create a new field in the certificate builder with just “billing_cpf + billing_rg”. This way I kept the “student name” field and added a new field for the mentioned options.