Can nodes be part of several groups?

Just a quick question - is it possible to have a node be part of more than one group for the purposes of flexbody deformation? If so, how?
I haven't been able to do it using {"group":"herp","derp"}, or {"group":["herp","derp]}, as the game complains. I feel it'd be useful to have this functionality.

Ta.

 

Seems to work with this format:

{"group":["UprightFL","SuspF1"]}

 

Thanks, I'll give that another go

EDIT: Cool, that works fine, thanks for your help