This returns a meaningful value from the first bar onward.
: Passes AmiBroker’s built-in Check Selection tool (Shift + F6).
What are you building (e.g., trend following, mean reversion, breakout)?
Apply your script as a chart indicator to manually verify that buy/sell arrows appear at the correct price points.
Once verified, document:
Ref functions like Ref(Close, 1) are correct. Ensure no accidental Ref(..., -1) (future data) in backtest signals.
Verify your code's error handling by running it on a symbol with zero data or missing data fields. If your AFL crashes AmiBroker or throws unhandled exceptions, you need to wrap your calculations in null-checks:
In the end, "Verified AFL" allows for . The trader connects their verified code to a broker API or Bridge. The human element—fear and greed—is replaced by the cold, verified logic of the script.