Micro MinimOSD takes yaw channel as trottle

Hi everybody.
I have a stupid problem with my MinimOSD , recently i got some fpv box style goggles, and i need to configure my MinimOSD to show throtle percentage becouse with the goggles i cant se my transmiter throtle stick and can easly crash my cuadcopter, the problem is that the OSD recognise YAW channel as THROTTLE channel, only thing i need is to reverse that.
How can i do that ? Im using an flysky fs-i6 radio and my FC is an APM 2.8