in Matlab the groupSyncWrite can't be find

[chenxinencode]

when I run the program,It went wrong in code"group_num = groupSyncWrite(port_num, PROTOCOL_VERSION, ADDR_MX_GOAL_POSITION, LEN_POSITION);",
matlab show that it can't find the lib"groupSyncWrite" when execute the code:VALUE = calllib(lib_name, 'groupSyncWrite', group_num, protocol_version, start_address, data_length);
what should I do?

[ROBOTIS-David]

1. Check the variables in the code whether you've really set the proper parameters corresponding to the config of DYNAMIXEL.
2. Unfortuanately, the issue section on the emanual may not be proper channel. I highly recommend visiting the community page, and discuss your issue with users. (Our technical experts are also actively playing around there)

Thank you,