exchange.SetTimeout(3000);
exchange.SetContractType("XBTUSD");
//取得第一次币量
position = _C(exchange.GetPosition);
last_Amount = position[0].Amount; //持币数量
hold_price = Math.round(position[0].Price); //持币均价
TypeError: cannot read property 'Amount' of undefined at main (__FILE__:38)