Robot based on the crossing of moving average in hull.

hello I want to create a robot MT5 that is based on the crossing of moving average in hull 22 in opening and closing in unit of time 15 minutes I would like to buy or sell if the moving average crosses and the robot goes into position, until it crosses again to be able to close the position, I made an image sketch so that you can understand, I would like to have the mql5 source code with PLEASE.