Removing commas from integer fields

Removing commas from integer fields

How can I remove the commas from integer fields in a template?
We need a number for our invoices but that number must not contain any commas.
Is there a way to use this field in a template (i.e. PDF) without commas?

We're using that field as: ${Invoices.No. Factura} which of course puts commas to separate thousands and that's something we don't want.

Thanks!