I am using the java logger and the level I config in the console are working.
java.util.logging.Logger.getLogger(this.getClass().getName()).warning("This is a log string.");
In the config I use com.my.package
To be able to get my package under the list in the admin console I had to add a line to logging.properties in my domain config
folder.
The line look like this:
com.my.package.level=INFO
Hope this is usefull for you. Because I do not know more ;-)
Vincent