A property exists with a given value in the referenced document of a drawing
The document tested is a drawing. 
Performs the operation if a property with a specific value exists in the part or assembly document referenced in the drawing.
We use the field concatenation tool to retrieve values from SOLIDWORKS variables, Windows, etc.
Several validation conditions are possible 
Example: For a room named Room 1, if the Description property exists in the document and its value is Visiativ-Room 1, then the operation is applied.