Subscribe dont work

[BeesUser]

Hello mqtt 3 dosnt work this method, no changes, what i did wrong?
final s =
client.subscribe(topicOut, MqttQos.atLeastOnce)?.changes.listen((data) {
logger.e('change logs');
});

[shamblett]

This will only give you changes to the Subscription you have generated, if you want to receive publish messages on this subscription use the updates stream -

client.updates!.listen((List<MqttReceivedMessage<MqttMessage?>>? c) {
    final recMess = c![0].payload as MqttPublishMessage;
    final pt =
        MqttPublishPayload.bytesToStringAsString(recMess.payload.message);
...

See the examples in the examples directory.