You're in luck! So, to start with: you need to point the midi channels being used by the hardware so Logic can communicate properly with the instrument. If you press "cmd+8", you open the "environment" window, then you should select "midi instruments" on the top left corner of the window. Then click on new, select instrument and on the menu on the left, you need to select the correct "port" for the instrument: Logic will display all the midi ports available for you. Once that's done, close the window and create a new external instrument, and the one you created will show up automaticly.
Now, on the "lists" menu on the top right, select event and you need to create meta events - that you can write with the pencil on the arrangement window - choose the right cc; it will probably display some general names for the cc numbers, but don't mind those, rely on your cc list for the virus. You can then draw automation on this event as you would with anything else.
Take your time getting to know this menus as there's a lot of functionality under the hood here. Logic, to my mind, is arguably the best dealing with anything midi - but it usually takes complexity out of our way. But it's all there!!
EDIT
plus, if all goes well, by simply pointing out the correct port, it should record the automation automaticly if you hit record with the track selected. And all the automation record modes will work as usual "touch, write...".
Ok, just checked it myself. It's as simple as selecting any cc number from the automation window (clicking A on the arrangement window), where you usually choose the volume, pan, etc - that very same menu - after you write some meta event. Pretty easy and convinient, uh?
Cheers
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