diff --git a/README.md b/README.md
index fa8d05d..d5b5149 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,6 @@ Digital twin mirroring node for driver node to CoppeliaSim
 "vrep_joint_names": ["Franka_joint1#1", "Franka_joint2#1", "Franka_joint3#1", "Franka_joint4#1",
                      "Franka_joint5#1", "Franka_joint6#1", "Franka_joint7#1"]  # coppelia scene joint names
 "robot_topic_prefix": "/arm3"  # robot driver namespace
-"robot_mode": "VelocityControl"  # only use when in simulation node, aka using_real_robot==False, for simulating velocity control mode. (TODO: currently not stable)
+"robot_mode": "PositionControl"  # only use when in simulation node, aka using_real_robot==False, for simulating velocity control mode. (TODO: currently VelocityControl is not stable)
 "robot_parameter_file_path": os.environ["ROBOT_3_JSON_PATH"]  # Robot definition JSON path
 ```
diff --git a/package.xml b/package.xml
index 555ac2e..17e5677 100644
--- a/package.xml
+++ b/package.xml
@@ -4,7 +4,7 @@
   <name>sas_robot_driver_franka</name>
   <version>0.0.0</version>
   <description>The sas_driver_franka package</description>
-  <maintainer email="moonshot@todo.todo">moonshot</maintainer>
+  <maintainer email="qlin1806@g.ecc.u-tokyo.ac.jp">qlin</maintainer>
 
   <license>LGPLv3</license>
   <buildtool_depend>ament_cmake</buildtool_depend>