Monitor qtree & quota on a vfiler

Hi,

I'm using the great "netapp.pl" from Francesco Duranti to monitor some NetAPP filers. Since we are using vFiler, the netapp.pl only list qtree from the physical filer not the virtual onces. In CLI, we have to do "vfiler context myvfilername" and then run commands to the vFiler, this can't work with the netapp.pl plugin. Is there a way to monitor vfiler quota ?