Logic Audio Help, I am new on midi Options

Hi guys, I wanted to ask you about the following

well I got my Korg X5D connected to my mac via modem port,
so midi is okay and OMS working perfectly

I got a problem with logic audio
when I record a midi track with a certain sound , and I try to record anotherone I cant use a diferent sound
I can but the track that I previously recorded changes its sound to the new one that I try to record
Example
I record a piano line
and then I try to record a string base,
my piano is transformed into strings
,,,
help a newbie please

[jimmynitcher]

Each sound must have a different midi channel number set for it and match the tracks' midi nubers in Logic.
You will need a book ,The Fast Guide to Emagic Logic by Stephen Bennett (PC publishing) is good.
Good luck
James

I looked for it in my keyboards manual and it appears there
so ill try to figure it out

[jimmynitcher]

That will be the instrument number.Then you must read the Logic manual to set the Track channel number so they match.

Oh I see
thx