How to use "Redirect url" for custom redirection

I need some help figuring out how to make my gallery solution complete. Following this tutorial: http://www.lullabot.com/articles/photo-galleries-views-attach
... I am setting up two content types: Gallery and Photo, which are linked with nodereference. On my Gallery page I have a link, that says "Add Photo(s)". I have set up my Photo node to use Image FUpload (one image per node). I need when the upload is done to return to the gallery page, that contains the newly-uploaded photos.

How can I do this using the "Redirect url" setting?