Hi-Mid-Low inputs have a range of 0% to 100%

My Hi-Mid-Low inputs have a range of 0% to 100%. By default the inputs are on 50%. When I turn the input to its lowest on the traktor the software can go up to 0% but never up to -100%. See example on the 2nd screenshot. A inputs are on the minimum on the traktor and in the middle on the software. On the B input the inputs on traktor are in the middle and on 50% on the software. How can I fix that?