Special redirect on submit form

Hi!

I have created a form and now I want it to be sent to the path where I am with "/confirm" at the end, but I just do not find a way to do it. It occurred to me to put "{{page.url}}/confirm" but it does not interpret the twig variables.

Any ideas?

why not use a file path like ./confirm or ../confirm to point the form to the page you like it to redirect?