AddMapKMLLayer with local File

loading a KML file fom web Adress works.
But a local file throws INVALID_Request.
GMap.AddMapKMLLayer ( 'file:///storage/emulated/0/Android/data/com.embarcadero.prjGMap/files/test.kml', TRUE);

Can thomeone help me?

Using Delphi XE6 Firemonkey Android (Nexus 7 Device not Emulator )
from  Win7 64

Sorry, using local files isn't supported. This is actually a limitation from the Google Maps API.

Thanks for your answer.

Is it possible to use offline mode meanwhile?

It is on our todolist to investigate this.