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Specification
# H4 Zone Retest EA (MQL5)
An automated trading Expert Advisor (EA) for MetaTrader 5, developed in MQL5.
The EA trades gold (XAUUSD) using a multi-timeframe breakout and retest strategy: it defines the first H4 candle of each day as a trading zone, detects breakouts on the M5 chart, waits for a retest, and executes trades with risk management, trailing stops, and optional news filtering.
---
## Features
- H4 → M5 breakout and retest trading logic
- Configurable fixed lot or risk-based position sizing
- Trailing stop management
- **Smart news filter** that avoids trading around high-impact events
- Spread and terminal safety checks
- Dynamic lot calculation based on risk percentage
## Strategy Overview
1. **Zone identification (H4)**
The EA marks the first H4 candle of the current day and stores its high and low as the trading zone boundaries.
2. **Breakout detection (M5)**
On each new M5 candle:
- A bullish breakout occurs when the candle closes above `zoneHigh`.
- A bearish breakout occurs when the candle closes below `zoneLow`.
When a breakout occurs, the EA starts waiting for a retest.
3. **Retest entry**
- If price returns to the broken zone within a specified window (`MaxWaitSeconds`):
- **Buy** on bullish retest → SL = breakout candle low, TP = 1.5 × risk distance.
- **Sell** on bearish retest → SL = breakout candle high, TP = 1.5 × risk distance.
- Uses either a fixed lot (`Lots`) or a risk-based lot (`UseRiskPercent`, `RiskPercent`).
4. **Trade management and protection**
- Trailing stop control (`UseTrailingStop`, `TrailingStart`, `TrailingStep`).
- Spread and trade-permission checks (`MaxSpreadPoints`, `TERMINAL_TRADE_ALLOWED`).
- **Built-in news filter**: the EA checks the MetaTrader 5 economic calendar (`CalendarValueHistory`) and automatically avoids opening new trades within the defined window around **high-impact news events** for a selected currency (`NewsFilterCurrency`, `NewsFilterMinutes`).
- This filter helps prevent entries during volatile periods and improves stability during major market announcements.
## Input Parameters
| Parameter | Description | Default |
|------------|-------------|----------|
| `Lots` | Fixed lot size per trade | 0.01 |
| `UseRiskPercent` | Enable dynamic lot sizing by risk | false |
| `RiskPercent` | Percent of balance risked per trade | 1.0 |
| `MaxWaitSeconds` | Maximum time allowed for retest | 86400 |
| `UseTrailingStop` | Enable trailing stop | true |
| `TrailingStart` | Profit (points) before trailing begins | 200 |
| `TrailingStep` | Distance (points) of trailing stop | 100 |
| `UseNewsFilter` | Enable high-impact news filter | true |
| `NewsFilterMinutes` | Minutes before/after news to avoid trading | 30 |
| `MagicNumber` | Unique identifier for EA positions | 202503 |
---
## Requirements
- MetaTrader 5 platform
- Broker supporting XAUUSD (gold) trading
- MQL5 environment (MetaEditor)
- Historical data for backtesting
---
## Installation
1. Open **MetaEditor** → *File → Open Data Folder*
2. Copy the `.mq5` file into `MQL5/Experts/`
3. Compile the EA
4. In MetaTrader 5, open *Navigator → Expert Advisors*
5. Attach the EA to a **XAUUSD** chart
6. Adjust input parameters as needed
---
## Backtest
**Symbol:** XAUUSD
**Timeframe:** M5
**Period:** Jan 2024 – Apr 2026
**Model:** Every tick (MetaTrader 5 Strategy Tester)
### Notes
- Default parameters were used unless otherwise stated.
- The test includes realistic spreads and commissions.
- Results are for research and educational purposes only and do not guarantee future performance.
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