Mouse Scoll button for movement

I have the Keymander 2 (naturally ) and except for it losing the macro function occasionally and requiring to turn it back on am relatively happy. HOWEVER I would love to be able to use the mouse scroll wheel to move forwards and backwards. Currently the left joystick (up and down ) are mapped to the keyboard, when I map it to the mouse scroll wheel it reacts by moving one spot up and then one spot back , so I do not move. Is there anybody out the who can help me pretty please

Kid