Key editor control setup cutoff

which controller number is cutoff in the Key editor. I tried adding brightness but no reaction when assigning the amount


CC74: Brightness/Cutoff Frequency

yes tried that but no reaction from instrument


It always depends on the tone generator, if it can receive the MIDI message, and how does it react to the message. Are you sure, the instrument car receive MIDI CC 74? And are you sure, it should change the Cutoff Frequency? You should find this in the Specification.

its a vst instrument from halion sonic se

in Retrologue no reaction to the controller and only reaction from some in halion sonic se. Do i need to activate something somewhere?