function Hedge (isOpen, retSetA, retSetB) {
    exchanges[0].SetDirection(isOpen ? "sell" : "closesell")
    exchanges[1].SetDirection(isOpen ? "buy" : "closebuy");
    (function (routineA, routineB) {
        Log(routineA.wait(), routineB.wait(), retSetA, retSetB)
    })(exchanges[0].Go(isOpen ? "Sell" : "Buy", -1, _ContractNum), exchanges[1].Go(isOpen ? "Buy" : "Sell", -1, _ContractNum))
}

function main () {
    var param = {"op": "subscribe", "args": ["futures/ticker:" + _Instrument_id_A, "futures/ticker:" + _Instrument_id_B]}
    var client = Dial("wss://real.okex.com:8443/ws/v3|compress=gzip_raw&mode=recv&reconnect=true&payload=" + JSON.stringify(param))
    client.write(JSON.stringify(param))