AC default values for ArrayMaximum and ArrayMinimum values

Has anyone found the way to grab the default values that the MT4 platform enters into the "fixed minimum" and "fixed maximum" fields? If no fixed max or min is entered the platform automatically presets a variable max and min value to match the values entered into the default buffers. Those values must be entered as data values, double's by their values shown in the indicator modification window, because they do vary, over time, even though they are greyed out and in response to the changeing AC Indicator values - how do you address those values? If the use of C++ is going to be entertained, in MT5, access to that area is going to be a required fact, or we might enter something capable of destroying other functions of the platform - it would be nice to know whether our thought path is terminal for the platform, or whether we can effect the trading we wish to?