RNBO - @ctlin 0 not recognised in param object

Hello,

I am working with RNBO and sending MIDI control information to param objects where I am defining @ctlin within each param object.

I ran a test and if I have a single param object within RNBO with @ctlin 0 no MIDI input appears on the RNBO object. If I switch it to @ctlin 1 a MIDI input appears and all is fine. If I define multiple parameter objects with different controller numbers the MIDI input appears on the RNBO object but MIDI controller 0 is still not recognised.

Also, if I use a ctlin object within RNBO, MIDI CC 0 is recognised. This is very confusing behaviour.

Any advice to get @ctlin 0 within the param object working? Is there any way to fix this that does not require remapping all the MIDI controllers so they start with 1? MIDI CC 0 is recognised without any issue by the ctlin object why not the param object in RNBO?

Thanks in advance,

S