.jsp HTTP monitor

I'm trying to create an HTTP monitor for a site which includes a .jsp file and then regex on an expression within the html body.

I have seen this get on another topic, however I can't seem to get it working in my example:

GET /path/to/monitor_page.jsp?param=some_value HTTP/1.1\r\nHost: \r\nConnection: Close\r\n

receive string should be 200 OK

Has anyone else set up something similar?