Hi Adrija,
Depending on how your page parameter(s) is provided, you can configure either the page URL or a microflow URL.
If you have only page parameter, linking to a static object, you can easily configure the page URL via the properties pane.
In your case, you probably need to retrieve or create a feedback object. Then, I would recommend to configure the microflow URL via the properties of a microflow, this is possible as of Mendix 10.
Hopefully this helps!
Regards,
Johan