How to get the complete file path of VMDK

Hi

I am trying to get the file path of the VMDK but unable to get the same

var devices = vm.config.hardware.device;

if ( devices != null )  { 

     for ( device in devices )  { 

          if ( devices[device] instanceof VcVirtualDisk) { 

System.log("controller"+devices[device].controllerKey);

System.log("name"+devices[device].backing.filename);

}

}

}

Regards,

Deepak