The index formula modified by Tongda letter on the main map cannot be saved, and the system default will be restored after re-entering the system.

Therefore, it is suggested that the function-expert system-formula manager be used to re-edit and establish the required moving average, and then adjust it on the main map.

The method is simple, just look at the original EMA formula in the formula manager, and then copy and modify it. Pay attention to choose the overlay of the main picture, and then remember the stored directory.