onReceive("ok") not work on pushEvent

[kakashysen]

Hi
I try to receive the "ok" event when I send a message but the event is never arrive. However this event is always received in the phx_event

channel.pushEvent("new:message", payload: payloadMessage)
// never called 
            .onReceive("ok") { (response) in
                // do something 
        }
// never called 
            .onReceive("error") { (response) in
                // do something 
        }

// here always receive the acknowledge when the message sent 
channel.onEvent("phx_reply") { (event, ref) in
            print("chat: phx_replay  \(String(describing: event))")
        }