EPIC3477

hello this is my first time to use launchbox. its a great design and overall its easy to use it, but i have a problem. im using x3 gamepad controller its very cheap and when it connected in usb its working and showing into /setting/gamecontroller. but when in wireless mode/Bluetooth mode its not showing, i try to refresh it but still not showing. my controller works on retroarch/ppsspp/cxbx/ when it in wireless mode. but in launchbox not working.