LFOtool & midi keyboard

I'm currently using studio one 3 next to cubase 9 to make perhaps a move to studio one. One thing that is really bothering me currently and I caot find a solution is that when I have an instrument track with for example Spire on it, I drag LFO tool on Spire so it adds it to Insert and I play live on my keyboard it does not sidechain. When I draw my notes in the piano roll of that spire track it does do SC. I probably have to setup some routing but I have no idea how. With cubase I just insert and it's working out of the box.

Could you help me out?

Thanks!