Export a bill in PDF but in portrait

Hello,

I've created a new bill template that works fine.
It is correctly displayed in the report screen , but when I want to export it to PDF format it is always exported in landscape mode.
I found in the /view/print.php file, function finalizePrint() at line 154

$html2pdf = new HTML2PDF('L','A4','en');

Modifying 'L' in 'P' will export all my pdf in portrait mode.
But the pdf is cutting part of my report, so I suppose that I have to provide additional information (max width of my table report for example) somewhere.
In addition I would like to use the portrait mode for my new bill, but not for other PDF exports, so is it possible to define it somewhere?

I will be grateful for any idea about it.
Thanks

Jean Pierre

Here it is what I've done in the print.php file.

/* JPH added */
// $html2pdf = new HTML2PDF('L','A4','en');
$myReport = $_REQUEST 'reportFile' ;
if ($myReport == 'bill-jph.php') {
$html2pdf = new HTML2PDF ( 'P', 'A4', 'en', true, 'UTF-8', array(5, 18, 5, 10) );
} else {
$html2pdf = new HTML2PDF ( 'L', 'A4', 'en' );
}
/* end JPH */

And it works as I want.
But this is not the best way of doing it, on the next upgrade I will have to remodify the file.
For the bill, I've created a new file and modified into the database the call for the bill to my new file, so upgrading will remain easy.
I don't know well enough ProjeQtor to make a suggestion on how to allow customisations to remain compatible with core upgrades, but I would have found better if I could store the HTML2PDF arguments within the report file.

Thank you very much, anyway.
Ciao
Jean Pierre