Classification description in IFC

Hi

I'm trying to get the classification description in my IFC.

I've placed a file called IFC_mapping_overrides.set in my workset's settings-folder. In that file I've placed a few properties which I get to show up in my IFC, but the description doesn't work. 

As seen, I work with BSAB, a Swedish system. If I check the definition editor under Objectclassification I can only see the BSAB property, not the description:

But in element properties I can see the property:

Not really sure how all that comes together in the IFC-export. Have I named the property wrong in the IFC_mapping_overrides.set-file? What should it be in that case? 

Or is there something else needed, since the property don't show in the definition editor? 

Regards, 

Robert