CPM & log

hi there, I'm using 11.4.1 with CPM to send traffic to different pools based on the path. Now I'd also like to log the path which comes form the client, but I can't find the correct syntax in CPM log part. Under "Actions" I chose Target: log, Action write, Parameter Message. Whatever I type then is in my ltm log file. I tried stuff like [HTTP::path] but then that string is in the log and not the actual path itself.

Any ideas?

:) schwiddy