[AstroCalibre]

Hi
When I generate the cover image of a book, the author's name appears at the bottom of the cover in the form "Last Name, First Name" (e.g. "Asimov, Isaac"). I want it in the form "First Name Last Name", without a comma and with the Last Name First Name reversed (e.g. "Isaac Asimov").
How can I do?
Thanks for attention,
Regards