Hi guys , I wonder if someone can help me to add an arrow every time that the indicator change his color.
Help you with what? You haven't stated a problem, you stated a want. Show us your attempt (using the CODE button) and state the nature of your problem. No free help 2017.04.21
Or pay someone. Top of every page is the link Freelance. Hiring to write script - General - MQL5 programming forum 2018.05.12
Generally a bad idea in an indicator. You can't access an object with iCustom.
It is usually better to use a buffer.