54行显示小括号不匹配

ParamsNumeric FastLength (5);Numeric SlowLength (20); Numeric N(1);VarsNumericSeries AvgValuel;NumericSeries AvgValue2;NumericSeries ATR;NumericSeries Buy_line;NumericSeries Sell_line;NumericSeries CurrentB;Begin//集合竞价和小节休息过滤If(!CallAuctionFilter()) Return;AvgValue1 = AverageFC(C1ose,FastLength);AvgValue2 = AverageFC(Close,SlowLength);ATR =AvgTrueRange(S1owLength);If(CrossOver(AvgValuel[1],AvgValue2[1])) CurrentB = CurrentBar;Sel1_line =Lowest(1,20)-N*ATR;Buy_line = Highest(h,20)+N*ATR;PlotNumeric(\"Se11_line\",Sel1_line);PlotNumeric( \"Buy_line\" ,Buy_line);PlotNumeric( \"AvgValue1\",AvgValuel);PlotNumeric(\"AvgValue2\",AvgValue2);If( MarketPosition==0 And CurrentBar>CurrentB and CurrentBar<CurrentB+20 And CrossOver(High,Buy_line[1])and AvgValuel[1]>AvgValue2[1])； Buy(0，Max( o ,Buy_line[1]));If( Marketposition==1 and AvgValue1[1]< AvgValue2[1]); Se11(0,o ); End标红处一直显示小括号不匹配，怎么改都不行，什么情况？