What is GMMA_ST?
GMMA_ST is an MT4 signal tool that prints a signal after a candle moves outside the Bollinger Bands and returns inside them. The original explains that eight moving averages treated as a GMMA and a stochastic are used as filters.
The display combines Bollinger Bands with a stochastic. The SMA_Period setting adjusts the period of the Bollinger Bands.
How to use GMMA_ST
Arrows appear when a candle passes through the Bollinger Bands and comes back inside. The original describes the number of signals as small.
The original describes the logic as counter-trend and notes that signals also occur while the GMMA is showing a clear trend with volatility present. The Deviation setting adjusts the deviation applied to the bands.
Where it helps
MT4 Indicator Parameters
The table below lists the available MT4 indicator parameters. You can customize these options in the MetaTrader Inputs dialog to match your trading preferences.
| Parameter | Description |
|---|---|
| SMA_Period | Sets the period of the Bollinger Bands. |
| Deviation | Sets the deviation applied to the Bollinger Bands. |
The screenshot above shows the default input parameters in the MT4 settings window.
How to Install .ex4 Indicator in MetaTrader 4
- Download the ZIP file and extract it.
- In MT4, select File → Open Data Folder.
- Open MQL4 → Indicators and copy the EX4 or MQ4 file into it.
- If the package includes library files, copy them to MQL4 → Libraries. Copy TPL files to the top-level templates folder.
- Restart MT4, find the indicator in the Navigator, and drag it onto a chart.
Test the tool on a demo account first. File contents and required folders can vary between packages.
