Created DirectShape is not extracted through forge.

[maxstefaniv]

Hello,
I generated (in debug mode an addin) DirectShape as a Volume of a Room as in:
https://github.com/jeremytammik/RoomVolumeDirectShape

Rooms are generated and REVIT file is saved correctly, then I send it to FORGE for processing and I extract Model View Metadata Properties (mvmp) and the OBJ.

The issue is that MVMP does not contain any information of recently generated room volumes, the object is:

DirectShape ds = DirectShape.CreateElement(doc, _id_category_for_direct_shape);

                    ds.ApplicationId = id_addin;
                    ds.ApplicationDataId = r.UniqueId;
                    ds.SetShape(geo.ToList<GeometryObject>());
                    ds.get_Parameter(_bip_properties).Set(json);
                    ds.Name = "Room_Max_is_an_okayish_dev_" + r.Name;

The question here is: how should I modify it so it will be included in the extraction mvmp.json?
I suspect I need to tag it somehow or add it to some sort of collection.

Please help.
Thank you in advance.

EDIT:
I suspect this is highly related to my issue:
https://thebuildingcoder.typepad.com/blog/2019/05/generate-directshape-element-to-represent-room-volume.html#9.3
But I dont know how to change this phase. This might be what I need?

Also autodesk viewer will not display this DirectShapes created through addin.