Click the button (the green checkmark icon) or press F5 .
Below is a structurally verified, clean AFL template for a simple Moving Average Crossover strategy. It includes proper trade delays, price routing, and portfolio settings.
To achieve verified status, every script you write must pass through several layers of verification. Syntax and Error Checking
/* Strategy: MyMAcross Verified on: 2025-02-20, AB 6.40, NIFTY daily. Warm-up bars: 50 (for EMA50). No look-ahead bias. */
// Synthetic price Close = 100 + Cum(1) % 20; Open = Close; High = Close+1; Low = Close-1; amibroker afl code verified
"Verification" in Amibroker typically refers to two things:
Bloated backtest reports filled with redundant trades.
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?
Always use explicitly defined variables. Do not let AmiBroker guess your variable types. Set up your charts to display error messages directly on the screen by enabling runtime error tracking under . 3. Structural Blueprint of Verified AFL Code Click the button (the green checkmark icon) or press F5
Divide your historical data into two parts: In-Sample (for optimization) and Out-of-Sample (for validation). If your code performs well on the Out-of-Sample data, it proves the strategy is not over-fitted. Step 5: Stress-Test with Monte Carlo Simulations
Follow this professional framework to verify any AFL script before risking capital.
By default, AmiBroker removes “redundant” signals (e.g., consecutive Buy signals without an intervening Sell). This is controlled by SetBacktestMode() .
Amibroker Formula Language (AFL) is a highly efficient language for algorithmic trading. However, unverified code can lead to catastrophic financial losses due to bugs, syntax errors, or bad logic. Using verified AFL code ensures your trading systems run accurately, safely, and exactly as intended. Why Code Verification Matters in Amibroker To achieve verified status, every script you write
Backtesting verification ensures your strategy’s performance metrics are accurate and reproducible.
// When using foreign symbols success = SetForeign("NIFTY"); if( !success ) // Ticker does not exist – handle error _TRACE("Foreign symbol not found!"); return;
By treating code verification as a mandatory step in your development workflow, you protect your capital from software bugs and build robust, dependable automated systems.
to simulate real-world execution lag.
// ------------------- END VERIFICATION -------------------
Run on a short date range and verify each row’s values against your mental calculation.