想找到某一天收盤價為25.6的股票為？ 程式碼這樣寫，卻找不到4903這隻股票，為何？

//findStock

input : backNum(50,"往回找幾天?");

variable:i(0);

for i=0 to backNum

begin

  value1=GetFieldDate("date")[i];

  value2=getField("Close")[i];

  if value1=stringtodate("20240607") and value2=25.600000 then 

  begin

    ret=1;

  end;

end;