URL Redirect iRule Question

Let me try and clarify. www1.abc.com is a web server with a public IP of x.x.x.x. abc.corp.com is a web server that is in a pool on the LTM. That pool is assigned to a virtual server on the LTM. That virtual server has a public IP of y.y.y.y. When the user connects to www1.abc.com, it redirects them to the virtual server IP of y.y.y.y and then to the pool with abc.corp.com. So, since www1.abc.com is redirecting the connection to the VS IP, the LTM sees the request as coming from abc.corp.com. The iRule and data group would work if the user connected directly to the LTM as www1.abc.com and did not get redirected from a that server. Does that make sense?