As your backend pool on VS-192.168.12.220 is secured (443), you need to have Server Side SSL profile to be configured. Also I would ask you to check if you are able to access required page using DMZ VS IP to see if that part works. If it is working fine, then we can focus on SVF VS (192.168.12.220).
so if i using this irules, the web browser pages display "the page is not working", but the irules redirect works when i hit http://192.168.12.220:45112. Its redirect to http://192.168.12.220:45112/adb-soa