主题：请版主帮忙

//准备中间变量
h30:ref(hhv(h,30),1);
l30:ref(llv(l,30),1);
中线:(h30+l30)/2;
NUM:=TBUYHOLDINGEX('84115','',1)+(0-TSELLHOLDINGEX('84115','',1));
DEBUGOUT('84115THOLDING=%.0f',NUM);
DEBUGFILE('D:\My Documents\我的文件\ControlCenter3\海通期货金字塔交易终端\84115.TXT','84115THOLDING=%.0f',NUM);

//建立多头建仓条件
long:=h>h30 and time>091000 and time<145200;
if long then
   begin
   sellshort(holding<0,0,limitr,h30);
   buy(holding=0,1,limitr,h30);
   end
  
pk:=c>h30-(1*MINDIFF) and time>091000 and time<145200; 
Tsellshort(pk and NUM<0,0,mkt,0,0,'84115');
dt:=c>h30 and time>091000 and time<145200;
Tbuy(dt and NUM=0,1,mkt,0,0,'84115');
  
//画出多头止损线
PARTLINE(holding>0,l30,colorred);

//建立空头建仓条件
short:=l<l30 and time>091000 and time<145200;
if short then
   begin
   sell(holding>0,0,limitr,l30);
   buyshort(holding=0,1,limitr,l30);
   end
  
pd:=c<l30+(1*MINDIFF) and time>091000 and time<145200;  
Tsell(pd and NUM>0,0,mkt,0,0,'84115');
kt:=l30>c and time>091000 and time<145200;
Tbuyshort(kt and NUM=0,1,mkt,0,0,'84115');
  
//画出空头止损线
PARTLINE(holding<0,h30,colorgreen);

//收盘前平仓
sell(time>145500 and holding>0,0,limitr,OPEN);
sellshort(time>145500 and holding<0,0,limitr,OPEN);
Tsell(time>145500,0,mkt,0,0,'84115');
Tsellshort(time>145500,0,mkt,0,0,'84115');

上面的公式我采用5分钟K线实盘后台交易，中段的平空开多、平多开空都没有问题，就是尾盘的收盘前平仓指令不执行，加上指定卖持（指定买持）都没有效果。请版主帮我看一下公式，指出问题之所在，不胜感谢！