MID: MA(CLOSE,26);//布林中轨
UPPER: MID + 2*STD(CLOSE,26);//布林上轨
LOWER: MID - 2*STD(CLOSE,26);//布林下轨
AA:low-LOWER;
BB:5*MINDIFF;
if low-LOWER<=5*MINDIFF and close>open then BEGIN
sellshort(HOLDING<0,HOLDING,MARKET);
buy(HOLDING=0,1,MARKET);
end
if UPPER-HIGH<=5*MINDIFF and close<open then BEGIN
sell(HOLDING>0,HOLDING,MARKET);
buyshort(HOLDING=0,1,MARKET);
end