 
     // Custom parameters
     wfMan.addParameter(&mqttchannel);
+    wfMan.addParameter(&mqttfname);
     wfMan.addParameter(&mqttuser);
     wfMan.addParameter(&mqttpass);
 

String stassid = "";
String stapass = "";
String mqtt_channel = "";
String mqtt_user = "";
String mqtt_pass = "";

WiFiManagerParameter mqttchannel("mqttchannel", "MQTT Channel",(const char*)mqtt_channel.c_str(), MQTT_CLEN);
WiFiManagerParameter mqttuser("mqttuser", "MQTT User", (const char*)mqtt_user.c_str(), MQTT_ULEN);
WiFiManagerParameter mqttpass("mqttpass", "MQTT Password",(const char*)mqtt_pass.c_str(), MQTT_PLEN);


          stassid = String((const char*)json["sta_ssid"]);
          stapass = String((const char*)json["sta_pass"]);
          mqtt_channel = String((const char*)json["mqtt_channel"]);
          mqtt_fname = String((const char*)json["mqtt_fname"]);
          mqtt_user = String((const char*)json["mqtt_user"]);
          mqtt_pass = String((const char*)json["mqtt_pass"]);
          
