主题：[求助] 这条语句为何不执行？

前高是值的。帮我看下下，谢谢。

代码如下：

//----MACD-----
DIF:EMA((CLOSE+h+l)/3,12)-EMA((CLOSE+h+l)/3,26);
DEA:EMA(DIF,9);
MACD:DIF;
STICKLINE(MACD>=0,MACD,0 ,5,0) ,COLORred;
STICKLINE(MACD<0,MACD,0 ,5,0 ),COLORGREEN;
STICKLINE(MACD>0 AND MACD<REF(MACD,1),MACD,0,5,0),COLORYELLOW;
STICKLINE(MACD<0 AND MACD<REF(MACD,1),MACD,0,5,0),COLORBLUE;

//-----变量声明----
GLOBALVARIABLE:前高:=0,前低:=0,xx:=3;
VARIABLE:前高MACD值仓库[1]=0, 前低MACD值仓库[1]=0;

//------高低点计算------
VA1:=HHVBARS(MACD,BARSLAST(MACD<0)+1);
VA2:=CROSS(BACKSET(CROSS(0,MACD),REF(VA1,1)+2),0.5);
VA3:=LLVBARS(MACD,BARSLAST(MACD>0)+1);
VA4:=CROSS(BACKSET(CROSS(MACD,0),REF(VA3,1)+2),0.5);
QG:=CROSS(BACKSET(CROSS(0,MACD) OR (ISLASTBAR AND MACD>0),REF(VA1,1)+2),0.5);

终点:=IF(ISLASTBAR AND MACD>0 AND MACD=HHV(MACD,BARSLAST(MACD<0)),1,IF(FILTERX(QG,BARSCOUNT(C)),2,DRAWNULL));
UU:=(终点=1 OR 终点=2) AND MACD>0;

//--------获取MACD前高---------

DRAWTEXT(MACD>0.5 AND VA2 AND VA2!=UU,(MACD/10)*9,'前'),COLORWHITE;
DRAWTEXT(MACD>0.5 AND VA2 AND VA2!=UU,MACD/10,'高'),COLORWHITE;

//--------获取MACD前低---------
DRAWTEXT(MACD<-0.5 AND VA4 AND VA4!=UU,(MACD/10)*9,'前'),COLORWHITE;
DRAWTEXT(MACD<-0.5 AND VA4 AND VA4!=UU,MACD/10,'低'),COLORWHITE;

GLOBALVARIABLE:前高:=0,xx:=0;

  前高:=if( MACD>0.5 AND VA2 AND VA2!=UU,MACD,0);

if 前高!=0 then xx:=333333333;