Before execution, AFL code must pass the internal compiler checks provided by the AmiBroker Formula Editor Syntax Validation button (or
Never backtest a strategy before looking at it on a live chart.
The story usually begins with a trader downloading a "Super-Profit" AFL script from a public forum. It looks beautiful on the chart—bright green buy arrows exactly at the bottom and red sell arrows at the very top.
Create a separate verification AFL that runs your core logic on synthetic data. amibroker afl code verified
To help tailor a verification strategy for your specific trading setup, let me know:
To trade with absolute confidence, you must ensure your strategy uses techniques. Code verification goes far beyond simply fixing syntax errors; it involves validating logic, eliminating data leakage, and ensuring that what you see in your backtest matches reality.
Are you planning to use this for trading? Before execution, AFL code must pass the internal
Do you have a specific (like a crossover or breakout) that you'd like to see converted into a verified AFL template ?
Before running a backtest, apply these manual or scripted checks.
: Outline the trading plan or mathematical logic. Avoid relying on "gut feeling" and instead document the parameters for Buy/Sell decisions Function Descriptions : If you use custom functions , explain their inputs and outputs. Variable Scoping : If you use Create a separate verification AFL that runs your
Repainting occurs when a signal depends on the current bar's high/low/close but is evaluated before the bar closes in real time.
Verified AFL code doesn’t just backtest well on one stock or one time period. It has been stress-tested for walk-forward analysis, Monte Carlo simulation, and out-of-sample robustness. True verification includes a performance report that explains why the strategy works, not just that it worked.
Common mistake: comparing or combining arrays of different lengths.