为什么开不了空单

b:=H>ref(HHV(H,n3),1)and vol>ref(vol,1);
a:=CROSS(wma(c,n),wMA(CLOSE,n2));
e:=L<ref(llv(L,n3),1)and vol>ref(vol,1);
d:=CROSS(wMA(CLOSE,n),wMA(CLOSE,n2));
variable:dd=0;
if CROSS(wMA(CLOSE,n2),wMA(CLOSE,n))  then begin
sell(1,1,market);
aa:=0;
end

if d THEN BEGIN

 IF dd=0 AND e THEN BEGIN

  buyshort(1,1,market);

  dd:=1;

 END

end
variable:aa=0;
if CROSS(wMA(CLOSE,n),wMA(CLOSE,n2))   then begin

 sellshort(1,1,market);
 dd:=0;
end
if a THEN BEGIN

 IF aa=0 AND b THEN BEGIN

buy(1,1,market) ;

  AA:=1;
  END
  end

你的策略当你满足开空条件时，平空条件必定同时满足，故你一旦开空，马上又给你平空了。