Looks more like Dutch to me.
fredklopper, it looks like you're trying to schedule the door-window assembly, and have the door-window assembly report information about its infill using an anchor property. I think anchor properties work in the reverse: schedule the door, and have the door report information about the door-window assembly to which it is anchored via an anchor property.
In other words, put the anchor property in the door property set "O80_30_Deuren" and have it retrieve information from the DWA property set "ANL_31_Kozijn", then schedule the door.
You may eventually run into trouble with this method however, since some doors will be anchored to DWA's and other doors will be anchored to walls. It may not be possible to schedule them all together.
Richard Ellison