主题：后台程序化不会平仓的问题

资产:TASSET,LINETHICK0;
可用现金:TCASH,LINETHICK0;
持仓:THOLDING,LINETHICK0;
//准备中间变量
B:=MA(C,5),COLORWHITE;
D:=MA(C,20),COLORGREEN;
S:=CROSS(B, D);
X:=CROSS(D,B);
//建立多头条件
long:=S and time>090020 and time<145200;

 if long then      
    begin          {要先平仓，再开仓}
    tsellshort(long,tholding<0,0,lmt,c),ORDERQUEUE;
    tbuy(long,1,lmt,c),ORDERQUEUE;
    end
 
 //建立空头条件
short:=X and time>090020 and time<145200;
if short then      
   begin          {要先平仓，再开仓}
   tsell(short,tholding>0,0,lmt,c),ORDERQUEUE;
   tbuyshort(short,1,lmt,c),ORDERQUEUE;
   end

  //收盘前平仓
 tsell(time>145500 and tholding>0,0,lmt,c);
 tsellshort(time>145500 and tholding<0,0,lmt,c);