How to control pwm with bluerov_ros_playground?

Hello, I am using the ROS package bluerov_ros_playground. The connection for sending arm and setmode commands works very well, but there is an issue: I cannot use the set_pwm function for all outputs.

Here is the State of BlueROV2:data: "{\"arm\": true, \"light\": -137.5, \"camera_angle\": 168.75, \"motor\": [0, 0, 0,\ \ 0, 0, 0], \"mode\": \"MANUAL\"}"

Hi @HoaiThanh -
Have you reviewed this documentation?