Trigger env in fx SynthDef with pattern

Questions
1

Hello all,

I have a sound source SynthDef and a separate one for effects.:

(
s.bind{
	~bAmono.free;
	s.newBusAllocators;
	s.sync;
	~bAmono = Bus.audio(s,1);
	~bAmono.postln;
};
SynthDef(\test,{
	// src
	x = Saw.ar(\freq.kr(65));
	x = x * Env.asr.kr(2,\gate.kr(1));
	Out.ar(\out.kr(0),x*\amp.kr(0));
}).add;
SynthDef(\testFX,{
	var trigger;
	// in
	x = In.ar(\in.kr(0),1);
	// RLPF
	y = Env(
		levels: [820,210],
		times: [\rel.kr(1)],
		curve: -4
	).kr(0,\gate.kr(1));
	x = RLPF.ar(
		in: x,
		freq: y.poll,
		rq: 0.13);
	// out
	x = Pan2.ar(x);
	x = LeakDC.ar(x);
	Out.ar(\out.kr(0),x*\amp.kr(0.03));
}).add
)

I want to trigger the envelope in the effect SynthDef with a pattern. My first take was with a Pmono:

(
t = TempoClock(120/60);

Pdef(\pd,
	Pbind(
		\instrument, \test,
		\dur, 1,
		// pitch
		\scale, Scale.minor,
		\degree, Pseq([0,1,2,4],inf),
		\mtranspose, -14,
		// out
		\amp, -18.dbamp,
		\addAction, \addToHead,
		\out, ~bAmono
	)
).play(t);

p = Pmono(
	\testFX,
	\in, ~bAmono,
	// rhythm
	\dur, 2,
	// RLPF
	\rel, Pkey(\dur),
	// out
	\amp, 0.dbamp,
	\addAction, \addToTail,
	\out, 0
).play;
)
(
{
	Pdef(\pd).stop;
	1.wait;
	p.stop;
}.fork;
)

However, in this case the Pmono can’t be stopped + it triggers the envelope only once. When I change doneAction: 2 in the effect’s SynthDef, the Pmono triggers the envelope once, the envelope runs through once and then frees the synth, so no sound afterwards.

Another way I thought of triggering the envelope in the effect SynthDef is via a set type Pbind, but no desired results:

(
~bpm = 120/60;
t = TempoClock(~bpm);

Pdef(\pd,
	Pbind(
		\instrument, \test,
		\dur, 1,
		// pitch
		\scale, Scale.minor,
		\degree, Pseq([0,1,2,4],inf),
		\mtranspose, -14,
		// out
		\amp, -18.dbamp,
		\addAction, \addToHead,
		\out, ~bAmono
	)
).play(t);

x = Synth(\testFX,[\in, ~bAmono],s,\addToTail);

p = Pbind(
	\type, \set,
	\id, x.nodeID,
	\in, ~bAmono,
	\args, #[\dur],
	\dur, 1
).play;
)

I also tried dkmayer’s suggestion of using Trig.kr() seen in this thread, to no avail.

What am I missing here?

Thank you,
cd