Reply to midi fighters digital inputs and Ableton

Hi
Just trying to map my midi fighter. I have wired up the digital inputs. however, when i try to map then in ableton they dont map. It sends a midi message because if I trigger the button when a vst is there it triggers a note on the synth. But when i go in to map mode and select something an try to map it nothing happens.

does anyone know what I am doing wrong.