thanksMr. Tanaka has already made an EA Based on this indicator. Try EA_halftrend-1.02 that i have attached. ####HalfTrend-1.02_push is the same as Halftrend-1.02 indicator which i have attached here as well. There is a EMA filter in this EA. So, you can choose EMA period 1 : 100 and Ema Period 2 : 200 if thats what you want.