I'm using this module from app store in order to preview PDF in the browser: \https://apps.odoo.com/apps/modules/14.0/report_pdf_preview/

When I click the  PDF download button, the filename is always "document" despite that I've defined custom filename like so:

< " field name="print_report_name">'Report_%s' % object.full_name

(added the space and " because I couldn't paste HTML tags properly)

How to fix this? I'm using < " record> tag