I have a form with a field of type 'Checkboxes' and 3 choices: 'pets', 'view', 'beach'. On submit, I need to pass the 3 choices values via query string to a service outside my domain, say http://www.external-service.com/, so that my values become parameters in a GET request to this domain.
For instance, if a user checks 'pets' and 'view', on submit I want this user to be redirected to:
I tried to accomplish this by checking 'show values' box and then setting all my choices values to '1', but it wouldn't work.
How can I accomplish this, then?
Thank you very much