Rev-Revolute Interface: SimMechanic 2Gen and Simscape

Hello, I'm looking for a workaround to use simscape blocks (Belt Drive, Belt Pulley, Rope Drum, ...) with SimMechanic 2gen. The model "Electrically Operated Bread Slicer" http://www.mathworks.com/examples/simmechanics/2241-rotational-interface-electrically-operated-bread-slicer use rev-rot interface to link SimMechanic 2gen blocks to Simscape, following this example I build the model in the picture. I'm not sure that is correct, someone can help me? Thanks in advanced. Domenico