将（空跌幅度小于负-4）为预警公式

编写要求：

VAR10:=100*(C-COST(10))/COST(10);VAR1:=(CLOSE-LLV(LOW,28))/(HHV(HIGH,28)-LLV(LOW,28))*100;VAR2:=SMA(VAR1,4,1);VAR3:=SMA(VAR2,2,1);VAR4:=VOL/CAPITAL*34;VAR5:=REF(VAR4,1);主力建仓提醒: IF(VAR3<8.5 AND VAR2<11,-10,0),COLORRED;空跌幅度:IF(VAR10<0,VAR10,0),COLORYELLOW,LINETHICK2;-10,COLORCCFF99,POINTDOT;-20,COLORCCFF99,POINTDOT;-25,COLORCCFF99,POINTDOT;

解答：

VAR10:=100*(C-COST(10))/COST(10);