可否幫我檢視問題？

可否幫我檢視為何無法執行？

以下是我的程式

value1 = (close - lowest(low,27))/(highest(high,27) - lowest(low,27))*100;

value2 = average(value1,3);

value3 = average(value2,3);

value4 = average(value3,3);

plot1(value3, "TD");

plot2(value4, "PD");