Multiple PDFs

I have a form where one checkbox, opens up "another" form, actually it's one form with hidden fields until checkbox clicked.
But on the end, I would need 2 PDFs.
Is it possible, to show shortcode, or 2nd PDF only if that checkbox is checked?
I don't want people to have 2 PDFs all the time, when other PDF would be empty.
Thanks.

Sorry for this question, I have figured out way, on my own, I guess people know that. But Gravity has option for non default confirmation and notifications, conditional logic, where I was able to make what I asked for.

Hi,

Thank you for sharing solution that can help someone from our community to complete similar task.

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