MQL4 Reading Maximum and Minimum Values of MACD Sub Window

[Forex Trader]

Hey there,

I would like to determine the slope of the MACD Signal line. However, this slope also depends on what the current maximum and minimum range is on the MACD indicator window. I would prefer NOT to set the max and min values on the indicator. Instead, I would like to (in my EA) read what those current values are.

Is this possible?

If so, could someone guide me in the right direction?

Thanks!

Richard