加減碼語法

Option

大家好

我現在有4條件，分別是condition1, condition2, condition3 和 condition4

想要 condition1 and condition3 有三口多單

condition1 and condition4 有一口多單

condition2 and condition4 有一口空單

condition2 and condition3 有三口空單

請問語法該怎麼撰寫呢?

以下是我自己寫的

var : MP(0);

MP = marketposition*currentcontracts;

if MP = 0 then begin
if condition1 and condition3 then buy 3 shares next bar close stop;
if condition1 and condition4 then buy 1 shares next bar close stop;
if condition2 and condition4 then sellshort 1 shares next bar close stop;
if condition2 and condition3 then sellshort 3 shares next bar close stop;
end;

if MP = 3 then begin
if condition1 and condition4 then sell 2 shares next bar close stop;
if condition2 and condition4 then sellshort 1 shares next bar close stop;
if condition2 and condition3 then sellshort 3 shares next bar close stop;
end;

if MP = 1 then begin
if condition1 and condition3 then buy 2 shares next bar close stop;
if condition2 and condition4 then sellshort 1 shares next bar close stop;
if condition2 and condition3 then sellshort 3 shares next bar close stop;
end;

if MP = -1 then begin
if condition1 and condition4 then buy 1 shares next bar close stop;
if condition1 and condition3 then buy 3 shares next bar close stop;
if condition2 and condition3 then sellshort 2 shares next bar close stop;
end;

if MP = -3 then begin
if condition2 and condition4 then buytocover 2 shares next bar close stop;
if condition1 and condition4 then buy 1 shares next bar close stop;
if condition1 and condition3 then buy 3 shares next bar close stop;
end;

回測後發現是不對的，例如原本三口空單時，condition2 and condition4會先出掉兩口變成一口沒錯，但後來遇到condition2 and condition3時，不會再進兩口空單變三口

不知道大家看不看的懂，煩請高手們幫小弟解惑，謝謝