無法取得與看盤畫面上相同的KD值

variable: rsv(0), K(0), D(0);

Stochastic(9, 3, 3, rsv, K, D);

if (K[0]<=20 and K[1]<=20 and K[2]<=20 and k[3]>20 ) then

outputField1("第一次低檔鈍化",0,"日KD狀態")

else if (K[0]<=20 and K[1]<=20 and K[2]<=20 ) then

outputField1("",0,"日KD狀態");

ret=(K[0]<=20 and K[1]<=20 and K[2]<=20);

outputField2(K[0],2,"K");

outputField3(K[1],2,"K");

outputField4(K[2],2,"K");

outputField5(K[3],2,"K");

無法取得與看盤畫面相同的K值，請問如何修正?謝謝