IndicatorAdd does not work

[Ramzi D]

I am having hard time using IndicatorAdd, It does not even being recognized by the complier. 

IndicatorAdd

Adds an indicator with the specified handle into a specified chart window.

bool IndicatorAdd( int sub_win // number of the sub-window int handle // handle of the indicator );

[Andriy Moraru]

Did you include Chart.mqh library? IndicatorAdd is not the native function of MQL5.

[phi nuts]

IndicatorAdd is a class method for CChart class, if that confuse you, IndicatorAdd use mql5 function called ChartIndicatorAdd() - https://www.mql5.com/en/docs/chart_operations/chartindicatoradd