The article delves into developing a communication protocol to enhance MetaTrader 5’s Chart Trade indicator, enabling it to instruct an Expert Advisor (EA) for market actions. The challenge lies in the platform's restriction where indicators can't manage orders directly. The key focus is on designing a message protocol, crucial for seamless indicator-to-EA communication. It covers fundamental coding techniques, including memory management with manual class instantiation using 'new' and 'delete'. The expert explains message encoding and decoding using strings in the protocol, highlighting the importance of correctly structured assignments to prevent data misalignment. The article emphasizes developing modular applications over monolithic systems. #MQL5 #MT5 #ExpertAdvisor #CodingTips mql5.com/en/articles/12…