主题：短线模型求助

要建两个公式，公式1命名为：a

ma21:ma(c,21);
ma34:ma(c,34);

公式2要引用公式1，公式2的内容：

VARIABLE:n=0,m=0;
MID :=  MA(CLOSE,26);
UPPER:= MID + 2*STD(CLOSE,26);
LOWER:= MID - 2*STD(CLOSE,26);
k:stkindi('','kdj.k',0,17,-1);
ma21:stkindi('','a.ma21',0,2,-1);
ma34:stkindi('','a.ma34',0,2,-1);
ma5:ma(c,5);
ma10:ma(c,10);
kd1:ma21>ma34 and ma5>ma10;
kd2:cross(lower,l);
kd3:k>20;
buy(kd1 and kd2 and kd3 and holding=0,1,market);
pd1:MA5-MA10<0 and( MA5-MA10)<ema(MA5-MA10,9);
sc:cross(h,upper);
xc:cross(lower,l);
if holding=1 and sc then n:=1;
if n=1 and xc then m:=1;
pd3:cross(zs,l);
if pd1 or m=1 or pd3 then sell(holding>0,holding,market);