Well. I can't preview it because it is bound to a web service, so there goes that great idea.
qRules should have installed a sample form when you installed the full version. From the Start menu, under Qdabra / Tools / qRules, select Sample qRules Form. The first command will be the ChangeSubmitUrl command, click on it to change to that view.
Type a name for your form in the Form Name, then in the ShP Library URL field, enter the URL you are using in your form: http://intranet.dci.com/eng/apd/air/4288/Shared Documents
Tab out of that field and click the "Submit this form to a different library button". What happens? Any message in the Error node? The form won't actually submit (there are some required fields in different views) but you would expect to see the URL you entered in the Result field and nothing in the Error field...