同一个Bar上，开盘价交易，收盘价再出信号，失败

老师，使用的是onbar ,交易信号出现后，第二根bar开盘价交易//------------------------------------------------------------------------// 简称: opentrade// 名称: // 类别: 公式应用// 类型: 用户应用// 输出: Void//------------------------------------------------------------------------Params //此处添加参数 Numeric n(10020);Vars //此处添加变量 series<Numeric> barslastcrossup; Bool crossup; series<Numeric> barslastcrossbelow; Bool crossbelow;Events OnBar(ArrayRef<Integer> indexs) { crossup = (c>n and c[1]<=n and marketposition<>1); barslastcrossup = nthcon(crossup,1); if(barslastcrossup == 1 and marketposition<>1) { buy(1,open); } crossbelow = (c<n and c[1]>=n and marketposition<>-1); barslastcrossbelow = nthcon(crossbelow,1); if(barslastcrossbelow == 1 and marketposition<>-1) { Sell(1,open); } PlotAuto(line,n,n,Yellow,Enum_Line,enum_solid,Enum_3Pix); Commentary(contracts=+text(currentcontracts)); PlotAuto(contracts,text(CurrentContracts),H*1.003,white); if(c<n and c[1]>=n) { PlotAuto(下穿,下穿,L*1.005); } if(c>n and c[1]<=n) { PlotAuto(上穿,上穿,L*0.995); } }