Simple Martingale Long and Short Position Increase Ratio Modification

/*backtest
start: 2017-06-26 00:00:00
end: 2022-02-16 00:00:00
period: 1d
basePeriod: 1h
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/
var m =LongAmount //Initial Order Quantity
var n = ShortAmount //Initial Order Quantity
var MarginLevel1 =MarginLevel  //Contract Leverage
var SetContractType1=SetContractType // Contract Type
var longprofit = profit //Expected return, long positions must not be less than the fee
var shortprofits = profits//Expected return, short positions must not be less than the fee
var longbet1 =longbet //Turn on multiple magnifications
var shortbet2=shortbet //Opening ratio
StopProfit /=StopProfit ;
StopLoss /=StopLoss ;
//Get random number 
function sum(m, n) {  
    var num = Math.floor(Math.random() * (m - n) + n);  
    return num;
}

function main(){
    while(true){
LogProfit(exchange.GetAccount().Balance)
        Sleep(2000)
    }
}
function main() {
    exchange.SetContractType(SetContractType1)
    exchange.SetMarginLevel(MarginLevel1)
    var position = []
    while (true) { 
         position = exchange.GetPosition()
        if (position.length == 0) {
            //Get random number0,1As direction
            var redom = sum(2, 0)
            Log(redom)
            redom=0==short //go short
            if (redom == 0) {
                n=ShortAmount
                exchange.SetDirection("sell")
                exchange.Sell(-1, n, "open short")
            }
            redom=1==long //go long
            if (redom == 1) {
                m=LongAmount
                exchange.SetDirection("buy")
                exchange.Buy(-1, m, "open long")
            }
        }
        if (position.length > 0) {

            if (position[0].Type == 0) {
                //Long profit greater than expected 
                if (position[0].Profit >profit) {
                    exchange.SetDirection("closebuy")
                    exchange.Sell(-1, position[0].Amount)
                    let redom = Math.random()
                    if (redom < 0.5) { 
                     m=LongAmount
                    exchange.SetDirection("buy")
                    exchange.Buy(-1, m, "Close long and open long positions")    
                }
             }  
                //If long position negative profit exceeds the margin, then add position

                if (position[0].Profit <position[0].Margin * -1) {
                    longbet1=longbet
                    m=m*longbet
                    exchange.SetDirection("buy")
                    exchange.Buy(-1, position[0].Amount=m)
               }
            }
                  //Short profit greater than expected 
            if (position[0].Type == 1) {
                if (position[0].Profit > profits) {
                    exchange.SetDirection("closesell")
                    exchange.Buy(-1, position[0].Amount)
                    let redom = Math.random()
                   if (redom > 0.5) {  
                     n=ShortAmount
                    exchange.SetDirection("sell")
                    exchange.Sell(-1, n, "Open a short position to offset a short")  
              }
          }
                  //If short position negative profit exceeds the margin, then add position
                if (position[0].Profit <position[0].Margin * -1 ) {
                    shortbet2=shortbet
                    n=n*shortbet
                    exchange.SetDirection("sell")
                    exchange.Sell(-1, position[0].Amount=n)
                }
            }
            Sleep(60000)
        }
    }
}