[NFS-Ganesha-Devel] What's the correct dbus command for get/set log level

Hi, I tried to use the command below,but it failed. Is there anyone know the correct format? dbus-send --print-reply --system --dest=org.ganesha.nfsd /org/ganesha/nfsd/admin org.ganesha.nfsd.log.component.Get string:org.ganesha.nfsd.log.COMPONENT_FSAL Thanks, Marvin