diff --git a/containers/devicemanagera/main.go b/containers/devicemanagera/main.go
index 7c6ac3e..a3d2598 100644
--- a/containers/devicemanagera/main.go
+++ b/containers/devicemanagera/main.go
@@ -13,7 +13,7 @@ import (
 func registerToServer() {
 
 	var obj map[string]string = make(map[string]string)
-	obj["name"] = "devicemanagerb"
+	obj["name"] = "devicemanagera"
 	obj["addr"] = constants.MyIP + ":3000"
 
 	b, err := json.Marshal(obj)
diff --git a/containers/devicemanagera/router/route.go b/containers/devicemanagera/router/route.go
index df0c076..2c463c4 100644
--- a/containers/devicemanagera/router/route.go
+++ b/containers/devicemanagera/router/route.go
@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"devicemanagerb/constants"
 	"encoding/json"
-	"io/ioutil"
 	"log"
 	"net/http"
 
@@ -29,21 +28,16 @@ func NewRouter() http.Handler {
 }
 
 // sensing data per device
-var s_data = map[string]interface{}{}
+var state = map[string]interface{}{}
 
 // status from sensor
 func PutStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 
-	b, err := ioutil.ReadAll(r.Body)
-	if err != nil {
-		w.WriteHeader(http.StatusBadRequest)
-		w.Write([]byte(err.Error()))
-		return
-	}
+	_status := map[string]interface{}{}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&_status)
 
-	status := map[string]interface{}{}
-	err = json.Unmarshal(b, &status)
 	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
 		w.Write([]byte(err.Error()))
@@ -57,22 +51,30 @@ func PutStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	s_data[did] = status
-	log.Println(s_data)
+	// state[did] = _status
+	// log.Println(state[did])
 
-	cdata, ok := c_data[did]
+	_, ok = state[did]
 	if !ok {
-		w.Write([]byte("I am devicemanagerB"))
-	} else {
-		encoder := json.NewEncoder(w)
-		err := encoder.Encode(cdata)
-		if err != nil {
-			w.WriteHeader(http.StatusBadRequest)
-			w.Write([]byte(err.Error()))
-			return
-		}
+		state[did] = _status
 	}
 
+	b, err := json.Marshal(state[did])
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	w.Write(b)
+
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+	w.WriteHeader(http.StatusOK)
+
 	req, err := http.NewRequest("PUT", "http://"+constants.ServerAddr+":3000/device/"+did, bytes.NewReader(b))
 	if err != nil {
 		return
@@ -82,11 +84,8 @@ func PutStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
 	if err != nil {
 		panic(err)
 	}
-
 }
 
-var c_data = map[string]interface{}{}
-
 func GetStatusHandle(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 	did, ok := vars["id"]
@@ -95,39 +94,30 @@ func GetStatusHandle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	status, ok := c_data[did]
+	_status, ok := state[did]
 	if !ok {
-		status = map[string]interface{}{
-			"servo": 0,
-			"fan":   0,
-			"light": 0,
+		_status = map[string]interface{}{
+			"msg": "hello world",
 		}
 	}
 
 	encoder := json.NewEncoder(w)
 
-	err := encoder.Encode(status)
+	err := encoder.Encode(_status)
 	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
 		w.Write([]byte(err.Error()))
 		return
 	}
-
 	w.WriteHeader(http.StatusOK)
 }
 
 func PostStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
 	vars := mux.Vars(r)
 
-	b, err := ioutil.ReadAll(r.Body)
-	if err != nil {
-		w.WriteHeader(http.StatusBadRequest)
-		w.Write([]byte(err.Error()))
-		return
-	}
-
-	status := map[string]interface{}{}
-	err = json.Unmarshal(b, &status)
+	_status := map[string]interface{}{}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&_status)
 	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
 		w.Write([]byte(err.Error()))
@@ -141,8 +131,8 @@ func PostStatusChangedHandle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	c_data[did] = status
-	log.Println(c_data)
+	state[did] = _status
+	log.Println(_status)
 
 	w.WriteHeader(http.StatusOK)
 }
diff --git a/router/notification.go b/router/notification.go
index 953ed50..6bf8f63 100644
--- a/router/notification.go
+++ b/router/notification.go
@@ -83,15 +83,6 @@ func GetDeviceWatch(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	// payload := map[string]interface{}{}
-	// decoder := json.NewDecoder(r.Body)
-	// err = decoder.Decode(&payload)
-	// if err != nil {
-	// 	w.WriteHeader(http.StatusBadRequest)
-	// 	w.Write([]byte(err.Error()))
-	// 	return
-	// }
-
 	if !checkDid(did) {
 		w.WriteHeader(http.StatusBadRequest)
 		w.Write([]byte("not exist did"))
@@ -99,9 +90,10 @@ func GetDeviceWatch(w http.ResponseWriter, r *http.Request) {
 	}
 
 	s := make(chan map[string]interface{})
-	ec := make(chan error)
-
 	defer close(s)
+	ec := make(chan error)
+	defer close(ec)
+
 	watch, ok := watchers[did]
 
 	if !ok {