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// Add custom metrics stats = bo.GetPerformanceStats(0); // 0 = Long positions maxDD = stats.GetValue("Max system % drawdown");

RSI_14 = RSI(14); VolumeSurge = V > MA(V, 50) * 1.5; Filter = RSI_14 < 30 AND VolumeSurge; AddColumn(C, "Close", 1.2); AddColumn(RSI_14, "RSI", 1.2); AddColumn(V, "Volume", 1.0); Run this on 5,000 stocks. AmiBroker will return a list of only those meeting the criteria. Exploration allows you to output historical values into a grid.

// --- Alerts --- AlertIf(Buy, "", "Buy Signal", 1); AlertIf(Sell, "", "Sell Signal", 2);

// --- Walk Forward Settings --- OptimizeInSample = Param("In Sample Years", 5, 1, 20, 1); OptimizeStep = Param("Step Years", 1, 1, 5, 1); SetOption("Optimization", "WalkForward"); SetOption("OptimizationInSample", OptimizeInSample * 252); // Trading days SetOption("OptimizationStep", OptimizeStep * 252); AmiBroker is not just for EOD (End of Day) trading. It supports real-time feeds via Plugin (e.g., IB, eSignal, Forex). 5.1 Real-Time AFL Logic To run code every second, use StaticVar and StaticVarGet to preserve variables between bars.

Introduction: Why AFL is the Backbone of Quantitative Trading In the world of retail algorithmic trading, few platforms offer the perfect blend of power, speed, and customization like AmiBroker . For over two decades, professional traders and hobbyists alike have relied on AmiBroker for backtesting, scanning, and real-time trading. The secret sauce behind this dominance is AFL (AmiBroker Formula Language) .

// --- DDE Output to Excel/Trading Bridge --- if (Buy) { fdde = DDEInitiate("Excel", "Sheet1"); DDEPoke(fdde, "R1C1", "BUY"); DDEPoke(fdde, "R1C2", Symbol()); DDEPoke(fdde, "R1C3", WriteVal(C)); DDETerminate(fdde); } Even experienced users write buggy code. Here is your AFL debugging toolkit. 6.1 The _TRACE() Function Prints values to the log window (View -> Log).