-- 请教以下问题
光标位置价格,并非同一时点
ptaclday1:100*CALLSTOCK(‘GC12’,vtclose,-1,0)*7.1-2835* CALLSTOCK(‘au12’,vtclose,-1,0) ,linethick2,colorwhite;
bulinupper:ma(ptaclday1,26)+2*std(ptaclday1,26);
bulinlower:ma(ptaclday1,26)-2*std(ptaclday1,26);
aau12:CALLSTOCK(‘GC12’,vtclose,-1,0);
cau12:CALLSTOCK(‘au12’,vtclose,-1,0);