FGear Vehicle Physics (v1.4)

How i get LateralFriction or LateralScale,etc… per axle?
Only get working this:
mAxle->getWheelOptions()->getLateralFriction();
mAxle->getWheelOptions()->getLongitudinalFriction();

Or if they are axle*wheel:
mVehicle->getAxle(0)->getLeftWheel()->getLateralSlip();

But when the get/set is only available for axle, im unable to find how ¿?

In blueprints i see how:

But via code, tried FrontWheelOptions, or WheelOptions0 or similar but nothing worked. Checked other .cpp but cant find any reference how i should do that. ¿?.