OTL folders trigger switch

# folder callback
kwargs['node'].hdaModule().tabSetChanged(kwargs['node'], kwargs['script_value0'])

# functions in pythonModule
def tabSetChanged(n, index):
   switch_name = 'switch_vis'
   setSwitch(n, switch_name, index)


def setSwitch(n, name, index):
   switch = hou.node(n.path() + '/' + name)
   switch.parm('input').set(index)