Change severity for sod log messages

I need to change the severity for some log messages from the sod service.
The ones I'm looking for are currently issued with severity notice and I want to increase this to warning.
I already found the list of several db variables to change the severity for different areas, but there isn't any such variable for sod.
Then I found the mapping table in /etc/alertd/bigip_sod_error_maps.h and I tried to change the severity in that file for the specific error message to warning. I also issued a restart of the alertd.
But the message is still being logged with severity notice.
So the question is, where and how can I change this behavior. Preferable a solution which is at least reboot safe and if possible also software upgrade safe.
Thank you!

Regards Stefan :)