Moving average only displays 4 decimal places with a fractional broker

 
I am using the iMA() function, but the values of the data obtaining by the function only produce a price up to 4 decimal places when it should be displaying pipettes (fractions of a pip). For example, if aud/usd is at 0.91236, iMA only uses 0.9124. I want the EA to display all 5 digits.
 
iMA returns a double - INFINITE digits. It doesn't display ANYTHING. RTFM and Problems with a calculation - MQL4 forum
 
Use DoubleToStr when displaying doubles?
Reason: