Could not find function or function reference 'iff'
Rewrite iff(condition, a, b) as condition ? a : b.
Updated 23 October 2026. Runs in your browser; nothing you type is uploaded.
Try a worked example
My script, Pine v6 indicator
TradingView's compiler stops at line 3
Could not find function or function reference 'iff'
Static checks, which read the code as written: No repaint flags found · 1 Pine v6 migration item. Edit the script and the compiler line goes; the checks below follow your edits.
Critical repaint flags
0
0 caution flags to verify
Bar-close gate
Not found
barstate.isconfirmed or a bar-close alert
Higher-timeframe calls
0
request.security() calls, of a 40 limit
Plots and alerts
1
Plots, of a 64 limit; 0 alerts
Repaint and lookahead
No lookahead leaks, unshifted request.security() calls or realtime-only signal branches found in this snippet.
Pine Script v6 migration checklist
These lines don't compile in v6, or behave differently. Check each one (TradingView's guide).
- Line 3: Removed iff() functionHigh risk
Pine v5/v6 removed iff(condition, thenVal, elseVal).
Fix: Rewrite as the ternary operator: condition ? thenVal : elseVal.
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Every desk in Pine Pro Library ships as readable .pine v6 source with confirmed higher-timeframe requests and barstate.isconfirmed event logging.
What causes it
iff() is not a Pine v6 function. The ternary operator does the same job.
The fix, compiled
Rewrite iff(condition, a, b) as condition ? a : b.
//@version=6
indicator("My script")
x = iff(close > open, 1, -1)
plot(x)//@version=6
indicator("My script")
x = close > open ? 1 : -1
plot(x)Names Pine cannot find
- Could not find function or function reference 'study'
- Could not find function or function reference 'security'
- Undeclared identifier "diff"
- Undeclared identifier "color.gold"
- Undeclared identifier "color.cyan"
- Could not find function or function reference 'ta.adx'
- Could not find function or function reference 'ta.sum'
- Could not find function or function reference 'ta.obv'
- Could not find function or function reference 'math.clamp'
- Could not find function or function reference 'dayofyear'
- Could not find function or function reference 'ema'
- Could not find function or function reference 'sma'
- Could not find function or function reference 'input.integer'
- Could not find function or function reference 'ta.kama'
- Could not find function or function reference 'ta.cmf'
- Could not find function or function reference 'ta.plus_di'
- Could not find function or function reference 'ta.slope'
- Could not find function or function reference 'ta.ichimoku'
- Could not find function or function reference 'ta.crossabove'
- Could not find function or function reference 'math.tanh'
- Could not find function or function reference 'math.mod'
- Could not find function or function reference 'input.timezone'
Compiled on TradingView 23 October 2026. The checker above reads repaint and v6 migration patterns; TradingView's compiler is the final word on whether a script compiles.
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