SketchUp to CityGML

Hello everybody,

I tried to add Cityeditor in my sketchup but I didn’t success the export to CityGML.

I would like to ask you how have I to organise my sketchup model to export it easily.

I did it by layers (ground surface, roof surface, floor surface, wall surface, installation, opens…) but how could city Editor work to identify that layers as CityGML classes.

I did it by FME with simple matching but now how can I do it, please?
My best regards.