Scaler 2.7 , Multi out with strings section

Guys ,
The multi out in 2.7 is doing perfect in the strings section as
1 for basses
2 for celli
3 for viola
4 for violin
but I notice when i tried to recored CC1 and CC11 it only controls what in channel 1 which is bases .

How can control and recorde for each of them separately for modulation and expression

Your help is appreciated