Product(s):	OpenBuildings Designer
	Version(s):	CONNECT Edition
	Area:	DataGroup System

Problem Description

For Compound Slabs, a custom property is sometimes added to either ‘Compound Slab Assembly’ or ‘Compound Slab Leaf’. But after selecting the slab that property cannot be found,  This mainly seems to happen with Single Layer slabs.

Reason

This issue happens because in Update 10 Compound Slabs are unlike Legacy Slabs, and are made up of two components:
1. Compound Slab Leaf
2. Compound Slab Assembly

Though these fall under Compound Slab they are treated as separate entities.

Steps to Resolve

If any custom property is required then that property must be added in both Compound Slab Leaf and Compound Slab Assembly. 

The workflow and the issue are demonstrated in the video below.