diff --git a/protocol/json/client_notification.go b/protocol/json/client_notification.go
index d36434a..0ed8575 100644
--- a/protocol/json/client_notification.go
+++ b/protocol/json/client_notification.go
@@ -2,10 +2,9 @@ package json
 
 import (
 	"encoding/json"
-	"reflect"
 
 	"git.loafle.net/commons_go/rpc/codec"
-	cur "git.loafle.net/commons_go/util/reflect"
+	cuej "git.loafle.net/commons_go/util/encoding/json"
 )
 
 // ----------------------------------------------------------------------------
@@ -34,8 +33,7 @@ func (cnc *ClientNotificationCodec) ReadParams(args []interface{}) error {
 	if cnc.err == nil && cnc.noti.Params != nil {
 		// Note: if scr.request.Params is nil it's not an error, it's an optional member.
 		// JSON params structured object. Unmarshal to the args object.
-		var values []string
-		if err := json.Unmarshal(*cnc.noti.Params, &values); err != nil {
+		if err := cuej.SetValueWithJSONStringArray(*cnc.noti.Params, args); nil != err {
 			cnc.err = &Error{
 				Code:    E_INVALID_REQ,
 				Message: err.Error(),
@@ -43,25 +41,7 @@ func (cnc *ClientNotificationCodec) ReadParams(args []interface{}) error {
 			}
 			return cnc.err
 		}
-
-		for indexI := 0; indexI < len(args); indexI++ {
-			value := values[indexI]
-			arg := args[indexI]
-
-			if cur.IsTypeKind(reflect.TypeOf(arg), reflect.String, true) {
-				arg = arg.(*string)
-				arg = &value
-			} else {
-				if err := json.Unmarshal([]byte(value), &arg); err != nil {
-					cnc.err = &Error{
-						Code:    E_INVALID_REQ,
-						Message: err.Error(),
-						Data:    cnc.noti.Params,
-					}
-					return cnc.err
-				}
-			}
-		}
+		return nil
 	}
 	return cnc.err
 }