Great question! EAs in MT4 are scripts written in MQL4 that follow predefined rules to analyze price data and execute trades. You don’t always need to code from scratch—many traders modify existing EAs or use builders like MetaEditor’s Wizard. For example, a basic EA might use a moving average crossover:
if (iMA(NULL,0,14,0,MODE_SMA,PRICE_CLOSE,0) > iMA(NULL,0,28,0,MODE_SMA,PRICE_CLOSE,0)) OrderSend(Symbol(), OP_BUY, 0.1, Ask, 3, 0, 0, "EA Trade", 1234);
This checks if the 14-period MA crosses above the 28-period MA to trigger a buy. What part of EA logic are you struggling with?