1分K策略語法問題

以下是我用交易腳本寫的當沖策略，但在執行回測時卻一筆成交紀錄都沒有，且許多個股都出現嘗試除以0的錯誤訊息
回去檢查被放在分母的數值應該都不太可能是0，想請問小幫手是哪裡有問題呢?謝謝

if date<>date[1] then begin

    condition1=false;
    condition2=false;

end;

input:r1(100000,"下單金額");
var:_amount(0);                         {變數紀錄下單量，最多10萬}
_amount=Floor(r1/(closeD(1)*1000));


if time>093000 and time<123000 then begin

    if volume/volume[1]>15 
    and close/close[1]<1.01 
    and close/close[1]>1                     {符合條件則記錄當下的high、close}
    and high/closeD(1)<1.06 then begin           {邏輯是找出爆量但漲不兇的1分K}
        value1=close;                                                                                               
        value2=high;
    end                                             
    else return;                                    

end;


if value1<>0 and value2<>0 and close<value1 then begin

    condition1=true;                {進場條件:跌破value1}
    condition2=false;

end;

if condition1=true and close>=value2 then begin

    condition1=false;               {出場條件:突破value2}
    condition2=true;

end;



if position=0 and condition1 then setposition(-_amount, close);
if position=-_amount and condition2 then setposition(_amount, Market);