void main() {
    Sleep(10000);
    Log(exchange.GetAccount());
   
    while (1) {
        if (exchange.IO("status") == 1) {
            exchange.SetContractType(Symbol);

            auto r = exchange.GetRecords(300); 
               auto kdj = TA.KDJ(r, 9, 3, 3);
              auto a1 = kdj[0][kdj[0].size() - 2];
              auto a2 = kdj[0][kdj[0].size() - 3];