it depends on how you want to use the bassline...
method 1....
select internal sync on plugin switch marked sync....
...then click switch on plug in to note
...use the piano roll editor to create pattern
...paste pattern in arranger
...press play....it should play what u have written
method 2 (better sounding...more 303 esque slides etc)
select internal sync on plugin switch marked sync...
...click switch on plug in to pattern
....draw in 1 bar (16) note in arranger at the C-o note
....go to pattern \/ on plugin.....select randomise
...paste pattern in arranger window
...press play...et voila....acid sqigglynessness
hope this helped! :)