關於錢德指標週選股

關於錢德指標週選股，我選日很正常,但選週就不正確了，能否幫忙看ˋ一下，因為週選會顯示不正確ˋ的股票類型

Input:length(34); setinputname(1, "天期");

variable: SU(0),SD(0);   

SetTotalBar(900);

if close >= close[1] then   

  SU = CLOSE - CLOSE[1]   

else   

  SU = 0;   

if close < close[1] then   

  SD = CLOSE[1] - CLOSE   

else   

  SD = 0;    

value1 = summation(SU,length);   

value2 = summation(SD,length);   

if value1+value2 <> 0 then value3 = (value1-value2)/(value1+value2)*100;

condition1 = value3 crosses Above 25;

condition10 = CONDITION1;

if condition10 then ret = 1;