大單比例線上穿小單比例線或小單比例線<0的函數如何編寫　[大智慧]

大單比例:=if(count(c,0)<=1,0,sum((ordervol(1,2)-ordervol(2,2)),0)/sum(ordervol(1,0),0)*100)-if(count(c,0)<=1,0,sum((ordervol(1,3)-ordervol(2,3)),0)/sum(ordervol(1,0),0)*100),coloryellow;
小單比例:=if(count(c,0)<=1,0,sum((ordervol(1,0)-ordervol(1,1))-(ordervol(1,0)-ordervol(2,1)),0)/sum(ordervol(1,0),0)*100);

xg:cross(大單比例,小單比例) or 小單比例<0;