local run = true

function main()
  while run do
      for sec in getClassSecurities("SPBFUT"):gmatch("([^,]+)") do
        local price = getParamEx("SPBFUT", sec, "PRICEMIN").param_value
        if price and price ~= 0 then
          local qty = CalcBuySell("SPBFUT", sec, "", Account, price, true)
          if qty <= 0 then
            message(sec .. ' B: ' .. qty, 2)
          end
        end
        price = getParamEx("SPBFUT", sec, "PRICEMAX").param_value
        if price and price ~= 0 then
          local qty = CalcBuySell("SPBFUT", sec, "", Account, price, false)
          if qty <= 0 then
            message(sec .. ' S: ' .. qty, 2)
          end
        end
      end
      sleep(60000)
  end
end
function OnStop()
  run = nil
  return 100
end