used Amibroker AFL code verified through a professional service. The verification report showed:
Raw mathematical cross-overs often generate consecutive Buy signals before a Sell signal occurs. This distorts backtest metrics and ruins position sizing calculations. Implementing ExRem() removes these redundant signals, verifying that a entry signal is only generated if the system is currently flat. 3. Step-by-Step AFL Verification Workflow
// DANGEROUS – assumes at least 300 bars exist for( i = 0; i < 300; i++ ) x = Close[ i ];
hosts several repositories dedicated to AFL. While the quality varies, some repositories have gained recognition: amibroker afl code verified
Using BuyPrice = Close when your system actually executes on the next day's open creates unverified results. Your code must match your broker's actual execution capabilities. Template for Verified AmiBroker AFL Code
//------------------------------------------------------------------------------ // VERIFIED CODE: Trend + Momentum Filter (NO LOOK-AHEAD) // Verification stamp: Passed Walk-Forward 2015-2020 | Max Drawdown < 15% // Compatibility: Amibroker 6.30+ | Database: Norgate Premium Data //------------------------------------------------------------------------------
AmiBroker features a powerful, built-in Walk-Forward Analysis tool. WFA automates the IS/OOS testing cycle across shifting time windows. A system that passes WFA proves that its underlying AFL formula is robust and adaptable. 4. Common Errors That Ruin AFL Verification Error Type What Happens How to Fix It Code uses Ref(C, 1) or Zig() , creating fake 90%+ win rates. used Amibroker AFL code verified through a professional
Introduced in AmiBroker 6.03.0 BETA, the integrated Visual AFL Debugger offers , single‑stepping , variable tooltips , and a Watch window .
| Source | Trust Level | Verification Provided? | Risk | |--------|-------------|----------------------|------| | Official Amibroker Forum (Senior Members) | High | Partial (usually logical) | Low | | GitHub with Backtest PDF & Walk-Forward | High | Yes (PDF report) | Low | | Paid Vendors (e.g., TradingTuitions, AFL Kings) | Medium | No (claims only) | Medium | | Unmoderated Telegram/Discord Channels | Critical | No | High | | eBay / Fiverr “99% Win” Scripts | Zero | No | Extreme |
: Set breakpoints to pause execution and hover over variables to see their current values. While the quality varies, some repositories have gained
//============================================================================ // SYSTEM NAME: Verified Dual Moving Average Crossover //============================================================================ // 1. System Settings SetOption("InitialEquity", 100000); SetOption("DefaultPositions", 5); SetTradeDelays( 1, 1, 1, 1 ); // Standardize delays to avoid look-ahead bias // 2. Core Indicators & Parameters fastPeriod = Param("Fast MA Period", 10, 2, 50, 1); slowPeriod = Param("Slow MA Period", 30, 10, 200, 1); fastMA = MA( Close, fastPeriod ); slowMA = MA( Close, slowPeriod ); // 3. Trading Logic (Signals) Buy = Cross( fastMA, slowMA ); Sell = Cross( slowMA, fastMA ); Short = 0; Cover = 0; // 4. Execution Prices BuyPrice = Open; // Executed on the next bar's open due to SetTradeDelays SellPrice = Open; // 5. Code Verification & Debugging Section Filter = Buy OR Sell; AddColumn( Close, "Close Price", 1.2 ); AddColumn( fastMA, "Fast MA", 1.2 ); AddColumn( slowMA, "Slow MA", 1.2 ); // 6. Chart Plotting Plot( Close, "Price", colorCandle, styleCandle ); Plot( fastMA, "Fast MA", colorGreen, styleLine ); Plot( slowMA, "Slow MA", colorRed, styleLine ); PlotShapes( Buy * shapeUpArrow, colorGreen, 0, Low ); PlotShapes( Sell * shapeDownArrow, colorRed, 0, High ); Use code with caution. 4. Advanced Verification Strategies
Writing Buy = Cross( MA( Close, 14 ), Close ); when you actually meant to buy a bullish breakout. AmiBroker will mark this as "Verified," but it will execute the exact opposite of your intended strategy.