Ruport - How to set page size?

Hi

I’m using Ruport to generate some pdf reports.
Ruport uses PDF::Writer to render pdf files.

I need generate report in A4 page format and by default, ruport
generate pages in Letter format.
How I can change this setting? or create custom pages sizes?

Thanks for help.

There’s an entire Google group dedicated to Ruport; I’d suggest
posting over there.