Add topic as method parameter

mqtt/mqtt.go

@@ -40,7 +40,7 @@ func Connect() {
 	fmt.Println("connected to broker, topic = ", topic)
 }
 
-func Listen() {
+func Listen(topic string) {
 	if !client.IsConnected() {
 		log.Fatal("Client is not connected")
 		return
@@ -82,8 +82,6 @@ func Setup(environment *env.Env) {
 	//fmt.Println("customer: ", *customer)
 	//fmt.Println("device: ", *device)
 
-	topic = "/ATB/#"
-
 	opts = createClientOptions(ev.Config.BrokerClientID, uri)
 
 }