Hey George,
If you are encountering an "unrecognized property" error when trying to add ground to a custom antenna design in MATLAB, it suggests that the property you are trying to set does not exist or is not applicable to the `customAntennaStl` object.
To resolve this issue, consider the following steps:
1. Check the documentation: Review the documentation or reference material for the `customAntennaStl` object to ensure you are using the correct property name and syntax for adding ground.
2. Verify the property name: Double-check the property name you are using to add ground. It should be a valid property for the `customAntennaStl` object. Common properties for antenna designs include `GroundPlane`, `Ground`, or similar variations. Ensure you are using the correct property name for adding ground.
3. Update MATLAB version or library: If you are using an older version of MATLAB or a custom antenna design library, it is possible that the property you are trying to use is not available or has a different name. Consider updating your MATLAB version or the custom antenna design library to the latest version to
