if (sys.gvarfind('tcs_is_set') = -1)
gvar (tcs_is_set)
  fvar(old)
  old=block.select(BLK_OBJ)
 
  println('Dim tcs')
  println('Set tcs = CreateObject("TCScript.Helper")')
  println('')
  block.select(BLK_NOTH)
  println('Set tcs = Nothing')
  block.select(old)
end