Extenspy grouping solutions ... any?

I have configure Extenspy its working fine…

[spy]

exten => 444,1,ExtenSpy(|v(4)b|g(99))

but grouping the extensions are not working.
if you have any dial plan for grouping the
extensions which should be scan when we
dial 444, from the group sets defined as:

[spy-group]
exten => 9206,1,Set(SPYGROUP=99)