Never backtest a strategy before looking at it on a live chart.
// Short Exit: Close above entry price plus ATR multiple Cover = C > (ValueWhen(Short, C, 1) + (ATR_Mult * ATR_Val));
Which (e.g., 5-minute Intraday Forex, Daily Equities) are you targeting?
AmiBroker processes data as arrays (a series of numbers over time). Trying to use an array directly inside a standard conditional if statement causes the infamous "Condition click expects a numeric or boolean expression" error. You must use functions like IIf() for array-based conditions. 3. Step-by-Step Process to Verify AFL Code
The official community can be "hostile" toward basic questions, often redirecting users to documentation. Who Is It For?
Do not rely solely on backtest report sheets. Use the PlotShapes() function shown in the template above. Zoom into individual bars on your chart to ensure the buy arrow appears exactly on the bar dictated by your strategy logic. Step 4: Run a Walk-Forward Analysis
Use the Code Profiler to identify inefficiencies. Optimize any loops or redundant calculations.
Run your code through the AmiBroker tool located within the Analysis window.
Debugging complex AFL code can take hours or days, taking time away from strategy development. 3. How to Verify AFL Code Yourself
// --- 2. INPUT PARAMETERS (Robust & Type-checked) --- Periods = Param("Breakout Periods", 20, 5, 100, 1); ATR_Mult = Param("ATR Stop Multiplier", 3, 1, 5, 0.5);
This comprehensive guide covers how to verify AFL code, eliminate common syntax errors, and build robust trading systems. 1. What is Verified AmiBroker AFL Code?
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