三线合一且小于-80的预警公式

编写要求：

解答：

网友求助：

WR1:-100*((HHV(HIGH,N)-CLOSE)/(HHV(HIGH,N)-LLV(LOW,N)))*(IF(DATE<1210201,1,0)),colorFF00;
WR2:-100*((HHV(HIGH,N1)-CLOSE)/(HHV(HIGH,N1)-LLV(LOW,N1)))*(IF(DATE<1210201,1,0)),colorFFFF;
WR3:-100*((HHV(HIGH,N2)-CLOSE)/(HHV(HIGH,N2)-LLV(LOW,N2)))*(IF(DATE<1210201,1,0)),colorFF00FF;
drawicon(wr1>-80 and wr2<-80 and wr3<-80,0,1);
-10,linedot,colorgreen;
-50,linedot,colorwhite;
-80,colorff00ff;
-90,linedot,colorred;