Sending Midi on multiple channels to one VST

I’m using reaktor and have modified the Beatslicer sampler, so that the sample to be played is chosen by sending a midi note on channel 1 to the VST, while the pitch is choosen via sending a midi Note on channel 2. Works fine in another program, but I didn’t find a methode so far to send midi on multiple channels to one instrument in Renoise, without maybe installing virtual midi instruments for external rewiring. Is there another method to do this?

Create a plugin alias for Reaktor and set it to channel 2.