// Short Exit: Close above entry price plus ATR multiple Cover = C > (ValueWhen(Short, C, 1) + (ATR_Mult * ATR_Val));
In the world of quantitative trading, AmiBroker stands as a colossus. Its native scripting language, the AmiBroker Formula Language (AFL) , is one of the most powerful, flexible, and fastest backtesting tools available to retail traders.
Every time you alter a single line of a "verified" AFL script, it becomes unverified again. Always re-run the verification process after every edit. amibroker afl code verified
// --- 5. EXITS (Volatility stop - Verified to prevent re-entry) --- Sell = Buy = 0; // Reset overrides Cover = Short = 0;
// --- 7. VISUAL VERIFICATION TOOL --- Plot(C, "Price", colorBlack, styleCandle); Plot(PrevHigh, "Breakout High (Prev)", colorGreen, styleDots); Plot(PrevLow, "Breakout Low (Prev)", colorRed, styleDots); PlotShapes(IIf(Buy, shapeUpArrow, shapeNone), colorGreen, 0, L, -30); PlotShapes(IIf(Short, shapeDownArrow, shapeRed), colorRed, 0, H, -30); // Short Exit: Close above entry price plus
// Current ATR for stop loss ATR_Val = ATR(14);
// --- 2. INPUT PARAMETERS (Robust & Type-checked) --- Periods = Param("Breakout Periods", 20, 5, 100, 1); ATR_Mult = Param("ATR Stop Multiplier", 3, 1, 5, 0.5); Always re-run the verification process after every edit
By applying the verification checklist in this article—syntax, logic, future leaks, and position management—you transform from a code collector into a disciplined quantitative trader.