What part is causing difficulty?
At the top of each channel in sparks mixer page you change "master" to a numerical audio channel
In Live you set up an audio channel and set its input from arturias channel. You have also set each audio track to "in" rather than "auto" on Abletons mixer page.
Master in Spark is channel one (or the channel youve loaded the VST into, of course you could also route this out too)
then channel 2 on Spark = 1/2 in Live
channel 3 = 3/4
channel 4 = 5/6