QR Code scanning - Redirect URLs

Now that the QR scanner is live, I’ve been playing around with it, but I can’t seem to figure out how to use a record ID to construct a URL for re-direction. I’ve used the URL from the page I want to direct to and split the Base URL from the record ID, pasting one into the URL Parameter Name field and the record ID comes from the QR Code field (form value).

The resulting URL looks nothing close to accurate - it includes the URL of the form page as well as the target URL and adds other characters which lands on 404 – not found.

Can someone help?