Is there a way to changing management module expression in APM via script. I don't see a if I could do a modification in via CLW
No that is not possible.
You will need to get a copy of the particular JAR file, open it up and modify the XML.
Once modified, you can redploy the module.
Hiko has said this functionality is not possible. Instead you need to do the above workaround. So submitting an enhancement sounds like the best next step..
Is there any other help that you need on this topic? If so, please list your follow-up questions
Since Hiko has said this is not possible, and there were no further responses, marking as answered. You may ask follow-up questions as required