how to change https header response using irule

Did you look at the example in the deployment guide as I suggested ? It shows the Stream profile replacing TWO ServerIP's with the big-ip's VirtualIP.

http://www.f5.com/pdf/deployment-guides/iapp-weblogic-dg.pdf

To create a new Stream profile

1. On the Main tab, expand Local Traffic, and then click Profiles.
2. On the Menu bar, select Other, and then click Stream. The Stream Profiles screen opens.
3. Click the Create button. The New Stream Profile screen opens.
4. In the Name box, type a name for this profile. In our example, we type wls-stream.
5. In the Target row, click the Custom box, and then use the following syntax to type the target:

@@@@@@

In our example, we type:

@web0.weblogic10.example.com:7041@web.weblogic10.example.com@@web1.weblogic10.example.com:7041@web.weblogic10.example.com@

In this example, we are searching for the host name "web0" and "web1", and replacing it with the host name of the virtual server "web" created by the template.

The second search and replace pattern (following the @@) is for our second WebLogic Server. 6. Click the Finished button.

However, I still highly recommend you fix the Apache server, so the Hostnames are redendered properly:

http://tomcat.apache.org/tomcat-6.0-doc/config/host.html

-Chris.