Attached is an indicator called HMA Hull moving average
i would like to add arrows or alert once the color is changed from buy to sell or vise versa
I would like to get an arrows which should be listed in colors windows not in the input one
any help and thanks in advanced
You should search it on Google before asking a question. You'll be able to find it soon.
In the main loop - where Uptrend and Dntrend are calculated, if one exist (not EMPTY_VALUE) for i and the other for i+1 build object arrow on time[i+1]. You can later base an alert/notification/something else on the arrow.
Or (better) add another buffer - arrows, and assign non-empty value on above described change and empty for all others. And use object (for alert) only for bar before last change (the existence of an object can help you not repeat the alert on every tick).