Boat control via mavlink

Hi, I am trying to control the blueboat(ardurover) via the external mavlink message that generated by a simulator. I can control the boat using manual mode or send the commend through UDP to control the boat in manual mode. Right now I have tested using the pymavlink package to send a simple message to the boat. When I changed to guided mode I used the SET_POSITION_TARGET_LOCAL_NED message. It seems that the boat didn’t move correctly (I have send the move forward or north to the boat but the boat will move backward and move randomly even it is heading to the north) .


are there any suggestions on how I can fix it? is there a way that I can check whether the message is received by the boat. I tried to download the log file but I can’t see any useful information. Thanks for your answer