You can recall information from Hidden Fields as part of your redirect path, like this:
You can also use them as query strings - for example if you want to add source tracking to your URL:
Note! Remember that Hidden Fields get different values as respondents fill out your typeform. When you recall information in a typeform, you're recalling the value of an item, not its name. For this reason, when you use a Hidden Field in a redirect link, make sure to recall the Hidden Field after the field's name in the URL, as the image above shows.
For security reasons, you cannot use Hidden Fields as the entire URL:
You cannot use them as the domain part of the URL:
Remember that you can edit the text of the Submit button to say anything you like. For more information see this article: Customize system messages.