function main() {
    let exName = _C(exchange.GetName)
    let ret = []
    
    if (exName == "Futures_OKCoin" || exName == "OKEX" || exName == "OKX" || exName == "OKCoin") {
        // Futures_OKCoin / OKEX / OKX / OKCoin
        if (setSimulateForOKX) {
            let info = exchange.IO("simulate", true)
            ret.push("OKX交易所切换为模拟盘环境")
        } else {
            let info = exchange.IO("simulate", false)
            ret.push("OKX交易所切换为实盘环境")