Build Your First MT5 EA: Step-by-Step

Build a basic MT5 EA in 30 minutes.

Step 1: MetaEditor > New > Expert Advisor. Name "SimpleTrend": extern double Lots=0.01; extern int FastEMA=14; SlowEMA=21; Magic=12345.

Step 2: OnTick(): double fast=iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,0); slow=iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,0); if(fast>slow && OrdersTotal()==0) OrderSend(Symbol(),OP_BUY,Lots,Ask,3,0,0,"Buy",Magic);

Step 3: TP=50 pips, SL=30; iRSI>70 partial close.

Step 4: Strategy Tester > EURUSD H1 > 2024-2025 > 99% quality. Target profit factor 1.4+.

Step 5: Genetic optimize EMA (10-30).

Add news filters, martingale. Forward-test 1 month on demo.

Sample Code (MQL5): if(fastEMA > slowEMA && rsi < 50) { /* Buy */ }

Test on your broker's demo.​

Risk Disclaimer: Code errors amplify losses.

Sources / reference to read on and on.

Here we share the references and sources that inspire and support our blog content, ensuring you get well-researched and reliable information.

https://www.myfxbook.com/most-popular-forex-systems

https://forexstore.com/best-forex-robots

https://www.goatfundedtrader.com/blog/best-ea-for-forex-trading