Form based redirect to unlinked page

SquareSpace Version 7.1

I'm trying to edit a form so that it will redirect to one of several pages based on the content of the submission. It's meant to provide a mystery download that is different for every submitter. 

for example: If the form is asking 'what is your birth day/month' and it is answered with 'january' from the drop down menu it will redirect to an unlinked page about January.

In the final version it will be a product review form where the submitter gets a custom download based on their birth month.

Thank you!

Try this