Precision of MACD in EAs

Hi:

I am trying to use MACD and OsMA indicators in my EAs but I find that they lack the same precision they show on the screen.

When I use MACD or OsMA indicators on the screen and put the mouse pointer over a bar, they show some seven or eight decimal digits, and sometimes, differences between bars are in the fifth or sixth decimal number.

If I Print() or Comment() the value of those indicators, they only display four decimal numbers, which are often the same for bars that show different values on the screen. I have tried to fix this with NormalizeDouble() but the result is the same; I have seen IndicatorDigits() function but I don't know how to use it in an EA. 

 I wonder if anybody has also experienced this and have found a way to get the right figure on an EA.

 Thanks for your help. 

Roberto