I have a question regarding position netting. From the Tech Doc description here, it mentioned that PL will be realized when the net position becomes zero.

In backtest setting, I already enabled Position Netting.

Then I opened 2 opposite trades with the same trading size, but the PL is still floating.

Here my simple script testing on XAUUSD on 2024.01

from AlgoAPI import AlgoAPIUtil, AlgoAPI_Backtest
from datetime import datetime, timedelta
class AlgoEvent:
    def __init__(self):
        self.cnt = 0
        
    def start(self, mEvt):
        self.evt = AlgoAPI_Backtest.AlgoEvtHandler(self, mEvt)
        self.evt.start()
        
    def on_marketdatafeed(self, md, ab):
        self.cnt+=1
        if self.cnt==1:
            order = AlgoAPIUtil.OrderObject(
                instrument=md.instrument,
                volume=1,
                openclose='open',
                buysell=1,   #buy order
                ordertype=0,
                takeProfitLevel=md.askPrice*1.2,
                stopLossLevel=md.bidPrice*0.9
            )
            self.evt.sendOrder(order)
        elif self.cnt==2:
            order = AlgoAPIUtil.OrderObject(
                instrument=md.instrument,
                volume=1,
                openclose='open',
                buysell=-1,   # opposite sell order
                ordertype=0
            )
            self.evt.sendOrder(order)

Anything I did wrong? Or do I misunderstand the description?