if(sys.gvarfind('rgn_is_set') = -1)
  include("wso")
  gvar(rgn_is_set)
  stack &= block.select(BLK_OBJ)
  println('Dim rgn')
  println('Set rgn = wso.Regions')
  println('')
  block.select(BLK_NOTH)
  println('Set rgn = Nothing')
  block.select(_arr.pop(stack))
end