object as passive collider in Kangaroo!

hi,

i still have not figured out (with kangaroo),
how to apply objects as passive collider.
similar to mayas nCloth.

the pictures below show what i intend.
so very simple, if you want to have more object
or rotate/translate them.

what i've found with kangaroo:
subdivide the mesh in rhino and then
the new guidelines apply as a spring in kangaroo.
a bit awkward if you want to vary it short.

can someone tell me how to do that?

many thanks