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How to build forex mt4 ev?

Forex MT4 Expert Advisors are software programs that are designed to automate trading strategies on the MetaTrader4 platform. These EAs are popular among forex traders as they can help in executing trades with precision, speed, and accuracy. Building an MT4 Expert Advisor is not a complicated process; however, it requires a good understanding of programming and forex trading concepts. In this article, we will explain how to build a forex MT4 EA from scratch.

Step 1: Define Your Trading Strategy

The first step in building an MT4 Expert Advisor is to define your trading strategy. You need to have a clear understanding of the market conditions that you want to trade in, the entry and exit points, and the risk management rules you want to implement.


Your trading strategy should be based on a sound trading plan that has been tested and proven to be profitable over time. You can use technical analysis tools, such as indicators, to help you identify market trends, support and resistance levels, and other important price action signals.

Step 2: Choose Your Programming Language

The next step is to choose the programming language that you want to use to build your MT4 Expert Advisor. The most popular programming languages for MT4 EAs are MQL4 and MQL5. MQL4 is used for programming Expert Advisors for MetaTrader4, while MQL5 is used for programming EAs for MetaTrader5.

If you are new to programming, we recommend that you start with MQL4, as it is easier to learn and has a larger community of developers who can provide support and guidance.

Step 3: Learn the Basics of MQL4 Programming

Before you can start building your MT4 Expert Advisor, you need to have a basic understanding of MQL4 programming. You can learn MQL4 programming by studying the MetaTrader4 user manual, taking online courses, or reading books on the subject.

The key concepts that you need to understand when learning MQL4 programming include variables, data types, functions, loops, and conditional statements. You also need to learn how to use the MetaEditor tool to write, compile, and debug your code.

Step 4: Code Your Expert Advisor

Once you have a good understanding of MQL4 programming, you can start coding your Expert Advisor. The first step is to open the MetaEditor tool and create a new file. You can then copy and paste the code from other EAs or write your own code from scratch.

The code for an MT4 Expert Advisor consists of several functions that perform different tasks, such as opening and closing trades, setting stop loss and take profit levels, and managing risk. You need to write these functions and test them to ensure that they work as expected.

Step 5: Test Your Expert Advisor

Once you have coded your Expert Advisor, you need to test it to ensure that it works as expected. You can do this by using the Strategy Tester feature in MetaTrader4. The Strategy Tester allows you to backtest your EA using historical data and see how it performs under different market conditions.

You can also test your EA in a demo account to see how it performs in real-time trading. This will help you identify any issues or bugs in your code and make any necessary changes.

Step 6: Optimize Your Expert Advisor

After testing your Expert Advisor, you may find that it needs some optimization to improve its performance. You can do this by adjusting the parameters of your trading strategy or the code of your EA. You can also use optimization tools in MetaTrader4 to find the best parameters for your EA.

Step 7: Deploy Your Expert Advisor

Once you have tested and optimized your Expert Advisor, you can deploy it in a live trading account. You need to ensure that you have a reliable internet connection, sufficient funds in your account, and that you have set the correct trading parameters for your EA.


Building an MT4 Expert Advisor can be a rewarding experience for forex traders who want to automate their trading strategies. However, it requires a good understanding of programming and forex trading concepts. By following the steps outlined in this article, you can build your own MT4 Expert Advisor and take your forex trading to the next level.


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