QoS for publishing is not working

[lozuwa]

Hello, I have been using this code to publish messages:

public void publishMessage(String topic, String message) {
final int qos = 2;
byte[] encodedPayload = new byte[0];
try {
encodedPayload = message.getBytes("UTF-8");
MQTTServiceCommand.publish(getActivity(), topic, encodedPayload, qos);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}

Nonetheless, when I receive messages with MQTTlens, the qos is still 0 for the sent messages. Is this a problem of the service?