Change pay-pal product using conditional logic.

I am working on a form to RSVP for an event. We are using the pay-pal widget to accept payments.

There are two options on the pay-pal widget one for the primary attendee (selected by default) and another for guest. I already have an option in the form asking if there is a guest and their name. I would like to update the pay-pal field to check the guest option if they check that a guest is attending. 

Is it possible to update the pay-pal widget selections using conditional logic? I know I could update a form field, but I can't seem to figure out how to update the pay-pal product options. 

If you want to offer your customers more than one payment option it is possible with JotForm.

Please, check the guides below for more information.

http://www.jotform.com/help/161-How-to-Update-the-Multiple-Payment-Form

http://www.jotform.com/help/275-How-to-pass-a-calculation-to-a-payment-field

If you have any further information, please let us know. We will be gad to assist you.