Pine Script Dynamic Alert Messages

//@version=6
strategy("Target Filled - Dynamic Alert Example", overlay=true, calc_on_every_tick=false)

// --- Inputs ---------------------------------------------------
contracts = input.int(1, "Order Size", minval=1)

// --- Runtime message builder --------------------------------------
// {{ticker}} / {{close}} style placeholders only work in the alert
// DIALOG's message box. Strings passed to alert() must be built in code.
buildMsg(side) =>
    side + " " + syminfo.ticker + " x" + str.tostring(contracts) +
     " @ " + str.tostring(close, format.mintick) + " on " + timeframe.period

// --- Sample signal — replace with your own entry logic ---------
fastMA = ta.ema(close, 9)
slowMA = ta.ema(close, 21)

if ta.crossover(fastMA, slowMA)
    strategy.entry("Long", strategy.long, qty=contracts)
    alert(buildMsg("BUY"), alert.freq_once_per_bar_close)

if ta.crossunder(fastMA, slowMA)
    strategy.entry("Short", strategy.short, qty=contracts)
    alert(buildMsg("SELL"), alert.freq_once_per_bar_close)

Settings

How to use

• Paste into the Pine Editor and swap the EMA-crossover placeholder for your own entry conditions.
• Extend buildMsg with anything else worth tracking — stop price, target, session P&L — via more str.tostring calls.
• Use format.mintick whenever a price gets embedded, so the string always lands on the symbol's tick grid.
• To have an alert place orders on NinjaTrader 8 or Tradovate, use the CrossTrade message format below.

Sending strategy alerts to CrossTrade

To have a strategy's alerts place real orders on NinjaTrader 8 or Tradovate, send them to CrossTrade, the automation platform we recommend. A CrossTrade alert message is a list of key=value lines. This is the one case where the dialog placeholders from the FAQ below are the simpler route: create one alert on the strategy, set the condition to "Order fills only," and paste this into the alert's message box:

key=your-secret-key;
command=place;
account=sim101;
instrument=ES1!;
action={{strategy.order.action}};
qty={{strategy.order.contracts}};
order_type=market;
tif=day;

• TradingView fills in {{strategy.order.action}} (buy or sell) and {{strategy.order.contracts}} each time the strategy's order fills, so no str.tostring work is needed for the order itself.
• Swap your-secret-key, sim101, and ES1! for your own CrossTrade key, account, and instrument. The CrossTrade docs cover every field.
• Paste your own CrossTrade webhook URL into the alert's Notifications tab. Webhook alerts need a paid TradingView plan.
• "Order fills only" keeps the buildMsg text from this snippet's alert() calls out of the CrossTrade alert. Keep those calls for a separate notification alert if you want both.

Frequently Asked Questions