回測有進場，但出場條件無法觸發

各位大神好，

請問以下腳本編譯正常，回測時有觸法進場但一直無法觸發出場，

我需要怎樣修正才能正常觸發出場？

input: largeSellOrderThreshold(10, "拋售單閾值"); 

input: largeBuyOrderThreshold(10, "買進單數量");

input: jumpOpenPercent(3, "跳空百分比"); 

input: priceDropPercent(2, "股價下跌"); 

input: priceRallyPercent(2, "股價急拉"); 

input: lowPointRallyPercent(2, "低點急拉");

input: forcedCoverTime(100000, "強制平倉時間");

variable: shortEntryPrice(0), shortEntryDate(0), stopLossPrice(0), coverPrice(0);

variable: isShortPosition(false);

variable: lowPoint(0), marketTime(0), currentTradeDate(0), isLargeSellOrder(false), isLargeBuyOrder(false);

marketTime = CurrentTime; 

currentTradeDate = CurrentDate; 

print("Current Market Time: ", NumToStr(marketTime, 6));

if marketTime >= 90000 and marketTime <= 100000 then begin

    if ((open / close[1]) - 1) * 100 >= jumpOpenPercent then begin

        if getfield("volume", "tick") >= largeSellOrderThreshold then begin

            isLargeSellOrder = true;

        end else begin

            isLargeSellOrder = false;

        end;

        if isLargeSellOrder and ((close / open) - 1) * 100 <= (-priceDropPercent) then begin

            isShortPosition = true;

            shortEntryPrice = close;

            shortEntryDate = currentTradeDate;

            lowPoint = low;

            setposition(-1);

            print("Short at ", close, " on ", NumToStr(shortEntryDate, 8));

        end;

    end;

end;

if isShortPosition then begin

    if getfield("volume", "tick") >= largeBuyOrderThreshold then begin

        isLargeBuyOrder = true;

    end else begin

        isLargeBuyOrder = false;

    end;

    if isLargeBuyOrder or ((close / shortEntryPrice) - 1) * 100 >= priceRallyPercent or ((close / lowPoint) - 1) * 100 >= lowPointRallyPercent or marketTime >= forcedCoverTime then begin

        setposition(0);

        print("Cover at ", close, " on ", NumToStr(currentTradeDate, 8));

        isShortPosition = false;

    end;

end;

print("Date: ", NumToStr(currentTradeDate, 8), " - Is Short Position: ", isShortPosition);