[sfepy] Re: Set groups in vtk mesh.

regions = { 'Omega' : 'all', 'Gamma_Left' : ('vertices in (x < 0.00001)', 'facet'), 'Gamma_Right' : ('vertices in (x > 99.099999)', 'facet'), 'GammaIn': ('vertices of group 0', 'edge'), }

The group I am struggling with is GammaIn. I was using vibro_acoustic3d.py as an example when I was creating my vtk mesh. Am I right in my assumption that it is enough to add field "node_groups" to my vtk and sfepy will gather information of the group number from this field?