We are looking into adding a button to the Send & Print wizard on Invoice. We are currently using the OCA module `report_pdf_options` to make the print button directly printing the report instead of downloading it. I noticed that when you use that print option, it calls the `account_invoices` report action that is on the `account.move` model or the `account_invoices_without_payment` if you select the Invoices without payment from Print.

Anyway, I inherited that wizard view, modified it to add a button that calls that action like this:

It works, it does prints *a document* but not the correct one. The reason being is, I believe, since the wizard is on the `account.move.send` model, it is using the ID from that model and just printing whichever invoice matches that ID. The `account.move.send` model does have a `many2many` field called `move_ids`, I think I need to pass the ID from that field instead (so maybe `move_ids.id`), but I am just not sure how to do that when calling that action, through a context, maybe? I have tried using context with mixed result, of which, none of them were intended result, probably because I wasn't setting the right context. If anyone can point me to the right direction, that would be awesome.

Thanks!