I was looking for the same functionality. There is another plugin thatyou can use to achieve this in combination with URL Params. It’s Called Contact Form 7 Redirection. You can redirect to another page after the form is submitted. You have to tick the box “pass fields” in the redirection settings tab of the form.
I’m lookin in the possibility to just send the field I need with the parameter. Don’t know yet if this is possible.
