Direct answer
Dynamic request.security is powerful because it lets you loop through a watchlist and request values more flexibly, but the real skill is deciding what information is worth scanning and what should stay outside the script.
Most scanner scripts fail because they collect too much data, not too little. The chart becomes unreadable, the scan logic becomes hard to explain, and the trader ends up trusting a panel they cannot actually audit.
Where people usually get this wrong
The usual failure mode is turning the scan into a technology demo instead of a usable decision tool.
- querying too many symbols and metrics with no real triage logic
- forgetting that scanner state still needs readable labels and table design
- mixing high-level ranking logic with low-level chart logic in one script
- assuming more requested data automatically means better signals
Copyable example
This is the kind of base pattern I prefer to start from before adding more filters, styling, or automation layers.
//@version=6
indicator("Dynamic scanner demo", overlay = false)
symbols = array.from("NSE:RELIANCE", "NSE:TCS", "NSE:INFY")
var table t = table.new(position.top_right, 2, array.size(symbols) + 1)
for i = 0 to array.size(symbols) - 1
symbol = array.get(symbols, i)
symbolClose = request.security(symbol, timeframe.period, close)
symbolRsi = request.security(symbol, timeframe.period, ta.rsi(close, 14))
table.cell(t, 0, i + 1, symbol)
table.cell(t, 1, i + 1, str.tostring(symbolRsi, format.mintick))How I would handle it in a real build
I keep multi-symbol scanners brutally narrow. Usually one market class, one timeframe logic, and one or two ranked signals at most. That keeps the scan actionable and stops the script from becoming a noisy dashboard.
If your current script or workflow already exists and the behavior is drifting, send the setup or code on WhatsApp. I can usually tell quickly whether it needs a rewrite, a migration pass, or a smaller audit.
WhatsApp for a 3-minute quoteWhat to read next
If this topic is part of a bigger TradingView or Pine Script workflow for you, these are the most useful follow-up guides on the site.
Send the chart idea, broker, market, and goal on WhatsApp. I can usually tell you quickly whether it needs a custom indicator, a strategy audit, an alert fix, or a broker-ready automation layer.
Related services
Frequently asked questions
Should I optimize this for backtests first or live behavior first?
Live behavior comes first. A cleaner live model usually gives you a more believable backtest, while the reverse is not always true.
Is Pine Script v6 the safer default for new examples now?
Yes. Traders still search with older wording, but new examples are usually easier to maintain and explain in v6.
When is the next step a service page instead of another tutorial?
Once you know the logic you want and the remaining problem is implementation, audit, or broker-ready structure, the service path is usually the better next move.
Primary sources and references
I take on Pine Script indicators, TradingView automation layers, strategy audits, and broker-aware execution workflows when the goal is clear and the live behavior actually matters.