-(IBAction)onPrepareButtonClicked:(id)sender {
    [self.flightController setIsVirtualStickAdvancedModeEnabled:true];
    NSLog(@"Virtual Stick available: %s", self.flightController.isVirtualStickControlModeAvailable ? "True" : "False");
    NSLog(@"Virtual Stick advanced enabled: %s", self.flightController.isVirtualStickAdvancedModeEnabled ? "True" : "False");
    if (self.flightController.isVirtualStickControlModeAvailable && self.flightController.isVirtualStickAdvancedModeEnabled)
    {
        [self.flightController setRollPitchControlMode:DJIVirtualStickRollPitchControlModeVelocity];
        [self.flightController setYawControlMode:DJIVirtualStickYawControlModeAngle];
        [self.flightController setVerticalControlMode:DJIVirtualStickVerticalControlModePosition];
        [self.flightController setRollPitchCoordinateSystem:DJIVirtualStickFlightCoordinateSystemBody];
    }
}