Using TouchOSC w/ OCSulator to control some 3rd party plugins in Logic 9.

Have those parts working beautifully.

The puzzle:

I also want to be able to select ,via TouchOSC, a specfic Track(s) in Logic.

I am stuck with 'what command/value' to send to Logic to select a specific track/channel.

Any help ... anyone? Ideas? Best guesses?