//in AbstractPlayControlc Class extensions - file: wrapForNodeProxy.sc. Add this to AbstractPlaycontrol.buildMethods dictionary
            filter: #{ | func, proxy, channelOffset = 0, index |
                var ok, ugen;
                if(proxy.isNeutral) {
                    ugen = func.value(Silent.ar);
                    ok = proxy.initBus(ugen.rate, ugen.numChannels + channelOffset);
                    if(ok.not) { Error("NodeProxy input: wrong rate/numChannels").throw }
                };

                { | out |
                    var e = EnvGate.new * Control.names(["wet"++(index ? 0)]).kr(1.0);
                    if(proxy.rate === 'audio') {
                        var innerArgNames = func.def.argNames.reject({arg it; it == \in});
                        var controlSigs;

                        innerArgNames = innerArgNames.collect({arg innerArgName;
                            innerArgName.asString ++ index ? 0;
                        });
                        controlSigs = innerArgNames.collect({arg innerArgName;
                            Control.names([innerArgName]).kr(1.0);
                        });
                        "MY ARGS: %".format(innerArgNames).postln;
                        "Controlnames: %".format(proxy.controlNames).postln;

                        XOut.ar(out, e, SynthDef.wrap(func, nil, [In.ar(out, proxy.numChannels)] ++ controlSigs ))
                    } {
                        XOut.kr(out, e, SynthDef.wrap(func, nil, [In.kr(out, proxy.numChannels)]))              };
                }.buildForProxy( proxy, channelOffset, index )

            },