Attach pdf in notification with multiple entries

Hi.
I have site where a user can submit a form and view a list of all entries submitted by that user. I would like for this user to be able to send and email with a pdf attached containing all the entries data. So the user can just input an email-address in a form, press send button and all entries will be written into this one pdf and sent along in the notification. Can this be done relatively easy? I know it’s easy to print out to the page a long list of entries like this: https://example.com/?gf_pdf=1&aid=1&fid=1&lid=40,41,42&template=default-template.php

I have tried to hook into this function:

add_filter( 'gfpdfe_lead_id', 'get_all_user_pdfs', 1, 4 );
function get_all_user_pdfs( $entry_id, $form, $entry, $gfpdf ) {
	return array(40,41,42);
}

But it doesn’t work.

https://www.ads-software.com/plugins/gravity-forms-pdf-extended/