remapping无法将话题重映射，

[A350_ti]

RT，我在使用ROS2_odrive_control包的时候在launch中写了如下语句想映射/cmd_vel话题，但并没有效果，网上也没有相关案例，特来求教大佬

    robot_state_pub_node = Node(
        package="robot_state_publisher",
        executable="robot_state_publisher",
        output="both",
        parameters=[robot_description],
        remappings=[("/diffbot_base_controller/cmd_vel_unstamped", "/cmd_vel")],
    )