Korg zero 8 setup Logic studio (midi)

[Krizz]

hey

I got some problems with my zero to control nobs in logic !
If i connect my zero 8 with firewire to my macbook , the signal is not correct to communicate with logic .
If i use midi in/out it works correct but than i got no audio card from my korg zero 8!!!
If i use both firewire & midi in:out the same problem ...
I think there is something to do with Plug 1-2 or 3 it switches between them if i want to turn the nobs in learning mode in logic!!

Please help me on this one

thx