Velocity Problems

Hey peps, Im pretty new in cubase so bare with me, however up untill today i havent have this problem.
when in the midi editor or piano roll or whatever its called, when i change the velocity in the botton it dont seem to do anything. even if i play on my midi keyboard, no matter how soft i touch the keys its still play full velocity.

Help please, atm im doing a psy bassline in sylenth1 . heh and it doesent matter how i change velocity in editor, plays full streanght on every note :confused: