This filter checks whether the layer contains elements.
Define the general settings for enhanced filters: negation, filter name, and filter description. See General filter settings.
1.Layer
Enter the name of the layer whose number of elements is to be checked. You can use RegEx. The icon 
opens the RegEx Editor.
2.Operator
The comparison operator for the number of layer elements.
3.Elements
Specify the number of elements to be checked using the specified operator in the layers found.
