function main() {
    var posType = [false, true][type]
    var name = exchange.GetName()
    if (name == "Futures_Binance") {
        exchange.IO("cross", posType)
    } else if (name == "Futures_HuobiDM") {
        exchange.IO("cross", posType)    
    } else if (name == "Futures_Bibox") {
        exchange.IO("cross", posType)        
    } else if (name == "Futures_Bitget") {