Dear forum members,
We use spaces to represent windows. Sometimes we need the surface of the opening part of the window. For that we anchor an AEC polygon with the opening surface to the window. The property set for our window spaces has a property that extracts the surface from that AEC polygon.
However, not all windows open or the opening surface may not be required. In that case of course no AEC polygon is anchored to the window space. That generates the error message *Anchor not found*, as shown in te picture below. Is there a way to change that error message and replace it for example with the number 0 ?
A different way I think of to proceed would be to use the above property as a help property and create the final property that calculates the desired value from the extracted surface or error.
