Hello, Minh
I am currently also participating in the IfcSpatialZone Working Group of buildingSMART International, moderated by Gianluca Genova.
Probably someone from the WG already contacted Graphisoft in regards to this topic. Anyway, let us know which is the current state of this implementation from the GS side.
Kind regards,
David
David Delgado Vendrell
http://www.daviddelgado.cat
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