KML folder icon

Hi

 

I have a workbench that create a kmz file with placemark and overlay within some nested folder.

 

 

My placemark and photooverlay use a style that is referenced onto a web server.

 

I want my folder to use a custom icon.

 

All folder the same icon as my placemark and photooverlay.

 

Any idea how to do this in FME ?

 

thanks!