Hello!
I’m new here on this forum, and just wanted to ask your advice.
Unfortunately I have a problem with three variables GPS event: event.altitude, event.speed, event.direction.
All the other vars works, but not these three.
I tested it on a Virtual Machine and it seems to work, it also works well on the simulator but unfortunately when I go to install the apk on android these three variables are blank.
Do you have any advice? Thank you very much 
(Sorry for my english!!)
goodbye