Code 49 - Set up in Logic Pro X

i purchased a Code 49 from M-Audio for 2 weeks, having a previously good experience with the AXIOM Air 25. Connected to Mac Book Pro (13", Retina) via an external Sound Card (Scarlett).
Fact : i am able to play the Keyboard with Logic, but I have no controll of Fader/Buttons/Stop-Rec through the Code 49, so that i have to do These operations diurect on Logic, which is really unconfortable.
Any Idea what i am doing wrong?
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