Problem to graph disk % from DEVMON

list L.M.J
Wed, 09 Apr 2014 10:16:52 +0200
Message-Id: <user-ed95927f652c@xymon.invalid>

Hi,

  I'm retrieving data from a remote SNMP device through DEVMON : works fine and I'm happy with it.
  Now, I would like to graph the disk occupation en %. I retrieve SNMP Disk % in the column "disk" but I can't figure out how to create a regular disk RRD graph.
  I'm graphing others data from DEVMON with NCV, but I would like to build-in disk graph settings, can someone provide a simple syntax/conf example please ?

  Thanks !