Ok. Ran the talker app directly (assuming this comes from https://github.com/ros2/tutorials/blob/master/rclcpp_tutorials/src/topics/talker.cpp], and can see the Hello World output. On another terminal, run `ros2param set talker/foo 1`, I get the response `Failed to set parameter`. This is running beta1 with FastRTPS as the only rmw, on a Windows machine. --- [Visit Topic](https://discourse.ros.org/t/composition-and-parameters-best-practice-suggestions/1001/8) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: