orderId = exchange.IO(“api”, “POST”,“/api/v4/futures/btc/orders”, { “contract”: “BTC_USD”, “price”: price2, “size”: 1, // Tambah parameter size “amount”: n, “direction”: “short”, “offset”: “open”, “lever_rate”: 100, “order_type”: “conditional”, “trigger_price”:price2, “order_price_type”: “limit”, “time_in_force”: “gtc” }); adakah kod ini betul, bagaimana cakera keras itu adalah satu-satunya komisen biasa, mohon Tuhan untuk membingungkan