No Gripper Options for Joystick

I have connected a joystick to Android QGC and am trying to map a button to open/close the gripper. However, no option for a gripper is listed, only camera and gimbal actions. Am I missing something in configuration or is this an issue between APM and QGC?

Gripper is enabled and configured already, I have been able to trigger it from separate RC.

Thanks

This was due to using an outdated version of QGC