求大单异动DDX指标的TB代码，从指标公式中没有找到DDX的源代码。

下面是别的工具上的DDX代码

VAR1:=REF(LOW,1);

VAR2:=(SMA(ABS(LOW-VAR1),13,1))/(SMA(MAX(LOW-VAR1,0),13,1))*4;

VAR3:=EMA(VAR2,13);

VAR4:=LLV(LOW,34);

VAR5:=EMA(IF(LOW<=VAR4,VAR3,0),3);

VAR6:=100-3*SMA((CLOSE-LLV(LOW,75))/(HHV(HIGH,75)-LLV(LOW,75))*100,20,1)+2*SMA(SMA((CLOSE-LLV(LOW,75))/(HHV(HIGH,75)-LLV(LOW,75))*100,20,1),15,1);

VAR7:=100-3*SMA((OPEN-LLV(LOW,75))/(HHV(HIGH,75)-LLV(LOW,75))*100,20,1)+2*SMA(SMA((OPEN-LLV(LOW,75))/(HHV(HIGH,75)-LLV(LOW,75))*100,20,1),15,1);

VAR8:=VAR6<REF(VAR7,1) AND VOL>REF(VOL,1) AND CLOSE>REF(CLOSE,1);

STICKLINE(VAR8 AND COUNT(VAR8,18)=1,0,18,8,0),COLORYELLOW;

STICKLINE(VAR8 AND COUNT(VAR8,18)=1,0,18,8,0),COLORYELLOW;

STICKLINE(VAR8 AND COUNT(VAR8,18)=1,0,18,5,0),COLORYELLOW;

STICKLINE(VAR8 AND COUNT(VAR8,18)=1,0,18,3,0),COLORYELLOW;

STICKLINE(VAR8 AND COUNT(VAR8,18)=1,0,18,1,0),COLORYELLOW;

DRAWTEXT(VAR8 AND COUNT(VAR8,18)=1,16,\'↙大单异动\'),COLORYELLOW;