NEXA Bb Trend Snapback
- Experts
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Park Seongcheon
Hello,
My name is Park Sung Chan, a developer specializing in MetaTrader 5 algorithmic trading systems.
I design and research long-term, reliable automated trading models based on the structural characteristics and statistical patterns of financial markets. - Version: 1.0
- Activations: 5
Expert Advisor User Guide
1. Product Overview
NEXA Bb Trend Snapback is an automated trading Expert Advisor designed for the MetaTrader 5 platform.
It applies a Bollinger Bands–based snapback (mean reversion) structure to execute sell-only trades under predefined market conditions.
The Expert Advisor operates only during permitted trading times and avoids unfavorable market environments using multiple built-in filters.
The product is distributed exclusively as a compiled EX5 file.
2. Trading Logic Overview
The Expert Advisor combines several technical conditions to determine trade entries:
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Bollinger Bands price expansion and snapback behavior
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Relative Strength Index (RSI) for bearish confirmation
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Volume comparison to detect increased market activity
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Volatility and trend strength filters using ATR and ADX
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Optional trading session blocking
All calculations and decisions are performed on closed candles only.
3. Trading Characteristics
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Trade direction: Sell only
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Order type: Market execution
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Stop Loss and Take Profit: Automatically calculated based on ATR
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Optional single-position-per-symbol control
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Optional maximum holding time enforcement
Trading frequency and results depend on market conditions, broker environment, and user-defined parameters.
4. Input Parameters
[General Settings]
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Trading symbol
Specifies the symbol to trade. If left empty, the chart symbol is used. -
Fixed lot size
Sets a fixed trading volume. The value may be adjusted automatically to meet broker requirements. -
Magic number
Unique identifier used to manage positions opened by this Expert Advisor. -
Signal timeframe
Timeframe used for signal calculation.
[Trading Time Filter]
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Defines allowed trading days and hours.
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No trades are executed outside the specified time window.
[BB Settings]
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Parameters for Bollinger Bands calculation, including period, deviation, and applied price.
[RSI Settings]
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RSI threshold used to confirm bearish market conditions.
[Volume Settings]
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Compares recent tick volume against an average to detect volume increase.
[Snapback Settings]
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Controls how deeply price must return into the Bollinger Bands before a trade is allowed.
[ATR Risk Settings]
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ATR period and multiplier used for Stop Loss calculation.
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Risk-to-Reward ratio setting for Take Profit placement.
[Market Regime Filter]
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Uses Bollinger Bands width and ADX values to restrict trading in unsuitable market regimes.
[Session Block]
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Allows blocking trades during specific trading sessions (for example, around major session opens).
[Exit Management]
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Optional Bollinger Bands middle-line exit
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Maximum position holding time setting
[Execution Filters]
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Maximum allowed spread filter
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New-bar-only execution to prevent repeated entries on the same candle
5. How to Use
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Attach the Expert Advisor to a chart in MetaTrader 5.
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Select the desired symbol and timeframe.
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Configure the input parameters according to your trading preferences.
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Enable AutoTrading.
It is recommended to test all settings in a demo environment before using the product on a live account.
6. Important Notes
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This product does not guarantee profits.
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Past performance and test results do not guarantee future results.
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Trading outcomes may vary depending on broker conditions, execution quality, and market behavior.
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Users are advised to understand the risks involved in automated trading.
7. Technical Restrictions
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No external DLL calls
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No WebRequest usage
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No collection of personal user data
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No external services, messengers, or third-party links integrated
8. Customer Support
Product support is provided exclusively through the MQL5.com product comments section or messaging system.
External messengers, emails, or third-party platforms are not used for support.
9. Version Information
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Product name: NEXA Bb Trend Snapback
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Version: 1.00
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Platform: MetaTrader 5
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File format: EX5
