我写的这个套利策略，其他地方都还好，就是这个减仓部分出了问题，百思不得其解，想向各位老师请教

Events
 OnInit()
 {
 layers[0]=SubscribeBar(“pp888.DCE”, "30m",  20211101.0930);
 layers[1]=SubscribeBar(“MA888.CZCE”, "30m",  20211101.0930);
 }
OnBar(ArrayRef<Integer> indexs)
{
 //买多部分
 //开仓1
If(k1==0 and jiacha<bz-db1)
{data0.buy(lots1,data0.open);
data1.SellShort(lots1,data1.open);Commentary("开仓1");
lotsj=lots1;k1=1;Return;
  }
//加仓2
If(k1==1 and jiacha<bz-2*db1)
{data0.buy(2*lots1,data0.open);
data1.SellShort(2*lots1,data1.open);Commentary("加仓2");
lotsj=lots1*2;k1=2;Return;
  }    
//加仓3
If(k1==2 and jiacha<bz-3*db1)
{data0.buy(3*lots1,data0.open);
data1.SellShort(3*lots1,data1.open);Commentary("加仓3");
lotsj=lots1*3;k1=3;Return;
  }  
//分批减仓        
If(k1>0 and  jiacha>lowestjc)
  {
  data0.Sell(lotsj,data0.open);
  data1.BuyToCover(lotsj,data1.open);
  Commentary(" 减仓");
  k1=k1-1;lotsj=lotsj-1;Return;
  }
  
 }

问题如下图

把图放大