Before deploying any strategy with real capital, use to simulate live trading on historical data. This tool processes bars one by one, exactly as they would arrive in a live feed, and reveals any subtle coding issues—such as signals that depend on future information—that might not appear in a conventional backtest.
Once your code is syntactically correct and free of bias, verify its viability using AmiBroker’s Analysis engine.
For a given small data set (e.g., 10 bars of known OHLC), manually compute expected outputs for your AFL logic, then compare with exploration output.
Which (e.g., 5-minute Intraday Forex, Daily Equities) are you targeting? amibroker afl code verified
: Clean Plot functions for manual verification on charts. How to Self-Verify
// Unverified (Risky) MyRatio = High / Low;
Verification guarantees that your backtests account for real-world factors like commissions, slippage, and liquidity. Before deploying any strategy with real capital, use
to simulate real-world execution lag.
// Check 1: No future bar used in signal Assert( Buy == 0 OR BarIndex() < LastBarIndex(), "Buy signal uses current bar only" );
_SECTION_BEGIN("Verified Strategy Article"); For a given small data set (e
[Write AFL Code] │ ▼ [Syntax Check & Compilation] │ ▼ [Apply ExRem & Price Bound Validation] │ ▼ [Scan for Future Leakage / Look-Ahead Bias] │ ▼ [Monte Carlo & Walk-Forward Optimization] │ ▼ [Verified Production Ready] Step 1: Validate Price Bounds
If you are looking to audit your script further, could you share the you are using, your intended execution timeframe , or the specific error codes you are seeing? Knowing these details will help pinpoint the exact updates needed to get your AFL strategy verified.
AmiBroker's Walk-Forward settings optimize your code on an "In-Sample" data segment and validate it on an untouched "Out-of-Sample" segment. If the Out-of-Sample performance collapses completely, your code might be over-fitted or fundamentally unverified. Summary Checklist for Verified Code Checklist Item Prevents same-bar execution bias BuyPrice = Open Ensures execution happens at a tradable price CommissionAmount Factors in broker frictional costs BarIndex Check Ensures data loops do not look forward
The "License Verified" badge on official forums is used to confirm legitimate users, which often leads to better support from the community and the developer. Pros and Cons Pros Cons
Before deploying an AFL strategy, run through this checklist: