Add this line to the end of your AFL:
To generate and verify a in AmiBroker using AFL code, you must configure specific backtester options within your script or the Analysis window settings. 1. Enabling the Full Report via AFL
for a common indicator (like RSI or EMA). Explain the difference between Buy and Short commands. Guide you on how to plot custom shapes on your chart. Let me know what you'd like to do next! AFL Reference Manual - AmiBroker
[Optional: Briefly mention if you have run a backtest and any key findings]. Important Posting Tips Get the Badge: amibroker afl code verified
Repeated identical buy signals over sequential bars skew simulation metrics and exhaust API memory during execution.
: Uses color coding to identify keywords, strings, and comments instantly. The Error Window
For more detailed verification (e.g., custom metrics like "Max % Trade"), you can use the : Use SetCustomBacktestProc(""); to define custom logic. Add this line to the end of your
A 200-line AFL with Buy = Cross(CCI(20), -100) and Sell = Cross(100, CCI(20)) . “Verified” response: “No errors – backtest runs.” Reality: The code repaints because CCI uses future bars if SetBacktestMode() is missing. The verifier never checked for repainting.
Pay attention to warning messages, not just critical red errors. 2. Visual Chart Auditing
"AmiBroker AFL Code Verified" is more than a buzzword; it is a standard for professional trading. By ensuring your AFL scripts are tested for accuracy and free from structural errors, you can transition from backtesting to live, automated trading with confidence, minimizing risks and maximizing efficiency. Explain the difference between Buy and Short commands
Run your code through the AmiBroker tool located within the Analysis window.
What or rules (RSI, MACD, Breakouts) do you want to add?
// Verified AFL Code: Dual Moving Average Crossover Strategy // Target: Trend Following Systems _SECTION_BEGIN("System Settings"); SetChartOptions(0, chartShowDates | chartShowArrows); SetTradeDelays(1, 1, 1, 1); // Verified trade delays to avoid future leaks PositionSize = -10; // Allocate 10% equity per trade _SECTION_END(); _SECTION_BEGIN("Trading Logic"); FastMA = MA(Close, 10); SlowMA = MA(Close, 50); Buy = Cross(FastMA, SlowMA); Sell = Cross(SlowMA, FastMA); Short = Sell; Cover = Buy; _SECTION_END(); _SECTION_BEGIN("Visualizations"); Plot(Close, "Price", colorCandle, styleCandle); Plot(FastMA, "Fast MA (10)", colorBlue, styleLine | styleThick); Plot(SlowMA, "Slow MA (50)", colorRed, styleLine | styleThick); PlotShapes(IIf(Buy, shapeUpArrow, shapeNone), colorGreen, 0, Low, -15); PlotShapes(IIf(Sell, shapeDownArrow, shapeNone), colorRed, 0, High, -15); _SECTION_END(); Use code with caution. Best Practices for Maintaining Verified Code Document every logic change inside the code.
AFL code can run without syntax errors but still produce incorrect results due to logical mistakes, array index mismatches, or hidden assumptions. This guide provides a step-by-step verification methodology.