InfoPath Dev

I'm trying to get a browser-enabled form to redirect to another page in the Site Collection after the form closes. I have read in numerous posts and blogs that you can update the source parameter in the URL to do this. My issue is I need to build the redirect URL string based on values in the current form. For testing purposes

Here is what I've tried so far:

added a button to a form

updated rules on button to close the form

added code to the button click event --> string strURL = "http://sp2010srv/sites/p108/sitepages/procnum.aspx";
HttpContext.Current.Response.Redirect(strURL ,false); a reference was added to System.Web

publish the form

upload form in central admin

browse to form library

open form, click button

RESULT: Error Unknown

Anyone have any ideas?

thanks in advance!