is there a way to use velocity in write option?

i use superior drummer 2.3 in sonar 8.5.3
 
velocities of all drums notes are differents. id like to use sonar's velocity to control all of them to make it softer or louder. but for some reaons, it seems to have no way to use sonar's velocity in write option!
whyyyyyyyyyyyyyyyyy ? all others we can but not this one. and its a very useful one too.
i didnt find another way to compense it. theres no options in superior drummer like this too :S
any idea?