主题：求助！关于布林线图表交易代码修改，许多人都说不可能编，难度太大

m:=26;

p:=2;

MID:  MA(CLOSE,M);//布林中轨
UPPER: MID + P*STD(CLOSE,M);//布林上轨
LOWER: MID - P*STD(CLOSE,M);//布林下轨

//交易条件
if cross(upper,c) then buyshort(holding=0,1,marketr);

if cross(c,lower) then buy(holding=0,1,marketr);

if holding>0 and l<enterprice-10*mindiff then sell(1,0,marketr);
if holding<0 and h>enterprice+10*mindiff then sellshort(1,0,marketr);

if h>mid then sell(1,0,marketr);
if l<mid then sellshort(1,0,marketr);

请指出是具体哪一点上没有开仓