用atr止损信号怎么才能不闪烁

Params Numeric Len1(5); Numeric Len2(20); Numeric ATRLen(20); Numeric Lots(1);Vars Series<Numeric> ma1(0,2); Series<Numeric> ma2(0,2); Series<Numeric> ATR(0,2); Series<Numeric> myExtPrc(0,2); Series<Integer> DirFlag(0,2); Events OnBar(ArrayRef<Integer> indexs) { ma1 = AverageFC(Close,Len1); ma2 = AverageFC(Close,Len2); PlotNumeric(\"ma1\",ma1); PlotNumeric(\"ma2\",ma2); ATR = AvgTrueRange(ATRLen); If(MarketPosition<>1 And ma1[1]>ma2[1] And DirFlag<>1) { Buy(Lots,Open); DirFlag = 1; myExtPrc = EntryPrice - ATR*4; //开仓时根据开仓Bar的ATR计算止损价 } If(MarketPosition<>-1 And ma1[1]<ma2[1] And DirFlag<>-1) { SellShort(Lots,Open); DirFlag = -1; myExtPrc = EntryPrice + ATR*4; //开仓时根据开仓Bar的ATR计算止损价 } If(MarketPosition==1 And BarsSinceEntry>0) { If(Low<=myExtPrc) { Sell(0,Min(Open,myExtPrc)); Commentary(\"多头ATR止损出场！\"); } } If(MarketPosition==-1 And BarsSinceEntry>0) { If(High>=myExtPrc) { BuyToCover(0,Max(Open,myExtPrc)); Commentary(\"空头ATR止损出场！\"); } } }这样写，最新价触及止损价又跳到挂单价这时止损信号会闪烁吗