...
Add to the plugin project a new folder named ObjectProperties. In this folder, create a new class named VolumeModelObjectPropertiesVolumeModelProperties.cs and adapt the contents to the code shown below:
...
...
Add to the plugin project a new folder named ObjectProperties. In this folder, create a new class named VolumeModelObjectPropertiesVolumeModelProperties.cs and adapt the contents to the code shown below:
...