do I add this to the additional settings: area?
on_sent_ok: "location = 'http://url.com/file1.pdf';"
on_sent_ok: "location = 'http://url.com/file2.pdf';"
on_sent_ok: "location = 'http://url.com/file3.pdf';"
on_sent_ok: "location = 'http://url.com/file4.pdf';"