网友求助：
请老师在公式出现"底"处写一个选股公式。谢谢！
VAR1:=(CLOSE-LLV(LOW,36))/(HHV(HIGH,36)-LLV(LOW,36))*100;
VAR2:=SMA(VAR1,3,1);
VAR3:=SMA(VAR2,3,1);
VAR4:=SMA(VAR3,3,1);
波: VAR3;
段: VAR4;
VAR6:=CROSS(VAR3,VAR4) AND VAR3<20;
DRAWTEXT(FILTER(VAR6,10)=1,40,'底'),LINETHICK3 ;
STICKLINE(FILTER(VAR6,10)=1,0,30,10,0),COLORGREEN ;
VAR7:=CROSS(VAR4,VAR3) AND VAR3>80;
STICKLINE(FILTER(VAR7,5)=1,80,100,10,0),COLORYELLOW ;
DRAWTEXT(FILTER(VAR7,5)=1,70,'逃'),LINETHICK3 ,COLORYELLOW;
VAR8:=CROSS(VAR2,VAR3) AND VAR3>80 AND VAR3>VAR4;
STICKLINE(VAR8,85,100,10,0) ;
90 ;
0;
解答如下：
VAR1:=(CLOSE-LLV(LOW,36))/(HHV(HIGH,36)-LLV(LOW,36))*100;
VAR2:=SMA(VAR1,3,1);
VAR3:=SMA(VAR2,3,1);
VAR4:=SMA(VAR3,3,1);
VAR6:=CROSS(VAR3,VAR4) AND VAR3<20;
FILTER(VAR6,10)=1 ;
