I'm new to MT4 programming, I guess the answer to my question is simple:
in the definition part there is:
in the program part there is:
A=trend; // trend in this case has the value -1
now, when looking at the comment window by launching the (complete) indicator,
see in the comment window -1 and 0 (-1 for trend is correct) but
I'd like to have the variable A showing the same value ("-1"),
but it shows 0??