主题：请老师指点

上

if BP then
   begin
   Tsellshort(BP,Tholding<0,0,LMT,C);
end
if BK then
  begin
  Tsellshort(BP,Tholding<0,0,LMT,C);
  Tbuy(BK and THOLDING=0,1,LMT,C);
end
if SP then
  begin
  Tsell(SP,Tholding>0,0,LMT,C);
end
if SK then
  begin
  Tsell(BP,Tholding<0,0,LMT,C);
  Tbuyshort(SK and THOLDING=0,1,LMT,C);
end

下

if BP then
   begin
   Tsellshort(BP and Tholding<0,0,LMT,C);
end
if BK then
  begin
  Tsellshort(BP and Tholding<0,0,LMT,C);
  Tbuy(BK and THOLDING=0,1,LMT,C);
end
if SP then
  begin
  Tsell(SP and Tholding>0,0,LMT,C);
end
if SK then
  begin
  Tsell(BP and Tholding<0,0,LMT,C);
  Tbuyshort(SK and THOLDING=0,1,LMT,C);
end
　

上下两段代码那段是正确的，上能开仓，但不能平仓，请老师改正，要求开仓平仓分开，尽量不要反手，谢谢！