Hi Umberto,
I have installed a small scenery package for Perth, Aust (YPPH) basically for FSX but it works reasonably well in P3D v3.4.
I have created an entry in Scenery.cfg for it. However, despite rebuilding the Couatl indexed several times GSX is using the default airport data found in P3D\scenery\0902 (from memory). This results in the wrong gates appearing and I can't use GSX for aircraft services.
How can I get GSX to use the supplied BGL in the Perth folder?