AKAI MPK61 Split - Channel filtering doesn't work


I’m new to Cubase and i really like some of it’s featuires, but I have one big problem with it - I can’t set split to work correctly on Cubase 5.

In my previous DAW (Mixcraft) all I had to do was set one virtual instrument track to channel 1, the other one to channel 2 and it just worked.

Here, despite setting the local input transformer to filter certain channels on certain tracks it duesn’t work - both virtual instrument tracks will output their signal either if the split button is off or on.

What do I have to do to I set it so that it would output the signal from first channel (when split is off) or second one (when split is on)? I’m asking here, because I’ve run out of ideas…