If my luggage is over 50lbs and is over 62 inches will i have to pay two separate fees?

Im flying southwest and i have a big luggage bag it is over 50 lbs and more than 62 inches on the southwest website it says I will be charged a fee of $50 if its over weight or if it exceeds 62 inches.. So will i have to pay two separate fees because its over both weight and size or just the $50?