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How to Use Zella AI in a Backtesting Session

Use Zella AI inside a backtesting session to control the replay, read the chart, add indicators, and review your backtest results.

Written by Marl

Zella AI is now available inside a specific backtesting session. Open it while you backtest a session, and it can control the replay, read the chart up to the current point, add indicators, and analyze your recorded results — all without leaving the chart.

How Do I Open Zella AI in a Backtesting Session?

  • Open or continue a session from the Backtesting page.

  • Open the Zella AI panel from the AI icon in the session's right-hand toolbar.

  • The panel shows which session you're replaying (session name, symbol, and starting balance).

  • Use New chat at the top of the panel to start a fresh conversation for the session.

What Can Zella AI Do in a Backtesting Session?

Read and analyze the chart

  • Read the current chart, including the latest visible candles and indicator values.

  • Explain price action, trend, structure, key highs and lows, momentum, and volatility, and point out possible trade locations.

  • Review what Williams Fractal is marking and whether recent fractals are useful structure or noise.

  • Compare multiple charts if you have a split layout open.

  • Analyze historical candles before the current replay point.

💡 Zella AI won't reveal candles after the current replay point unless you specifically ask it to look ahead.

Set up the chart

  • Add indicators such as VWAP, RSI, and Fair Value Gaps, and more.

  • Add them with default settings and tell you which settings it used.

  • Change the chart timeframe — for example, from 1-minute to 5-minute, hourly, or daily.

Control the replay

  • Play or pause the replay.

  • Change the playback speed (10× by default).

  • Change the playback interval (1 minute per step by default).

  • Jump to a specific point in the session.

⚠️ Note: If you jump backward, TradeZella asks you to confirm because orders placed after that time would be removed.

Run a structured backtest

  • Build a pre-trade checklist: higher-timeframe bias, key levels, entry trigger, stop, target, invalidation, and sizing.

  • Define objective strategy rules so you're not judging trades emotionally.

  • Help you tell a valid setup from a chase, countertrend attempt, late entry, or low-quality range trade.

  • Compare your execution to a Strategy's sample trades, if it has them.

  • Review the trades you log: P&L, win rate, expectancy, hold time, long vs. short, and rule adherence.

Journal and improve

  • Append a structured recap to the session note without overwriting your existing notes.

  • Document each trade's thesis, entry, stop, target, mistake, and lesson.

  • Create or refine a Strategy you can use to judge future sessions.

  • Create a draft backtesting scenario for repeated practice.

  • Compare this session against your other backtests or your live trading.

💡 Best use: before each entry, tell Zella AI your intended direction and trigger. It will pressure-test the thesis and make sure you have a defined invalidation and target before you commit.


What Can't Zella AI Do Here?

Orders and trades

  • Place, modify, close, delete, merge, or split simulated trades.

  • Set your stop loss, target, quantity, or bracket order.

  • Create a new session or start a scenario session.

Drawings and existing studies

  • Draw or edit trendlines, boxes, arrows, text, or Fibonacci tools.

  • Delete a drawing or undo a drawing deletion.

  • Remove, toggle off, or edit an indicator already on the chart.

  • Switch the chart symbol.

Use the chart's own drawing toolbar and undo controls for drawings.

Platform and account

  • Change backtesting settings, balances, commissions, subscriptions, or broker connections.

  • Import trades, sync a broker, manage media, or share the session.

  • Run or configure an automated backtest from chat.


What Are Some Useful Commands?

You can talk to Zella AI in plain language. Some examples:

  • "Pause the replay."

  • "Switch to the 5-minute chart."

  • "Add Fair Value Gaps."

  • "What does the current structure suggest?"

  • "Review my trades from this session."

  • "Help me define what I should test next."

Can I Keep Chatting with Zella AI Outside a Backtesting Session?

Yes. Your session conversations stay in your Zella AI chat history, so you can continue them from anywhere in TradeZella.

  • Click Zella AI at the top of the screen.

  • Click Chat history.

  • Select a previous conversation to pick up where you left off.

With Zella AI in your session, you have a hands-on partner to read the chart, control the replay, and turn each backtest into a clear set of lessons.

If you have any questions or need assistance, feel free to reach out to our support team — we're here to help!

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