How do you wind the line on a dual feed weedeater

Holding the spool in you hand find the arrow on the inside of the spool okay now cut off a someline about 8 feet and bend in half run one end of the line though one whole and the other end of the line through the whole on the spool no the spool should be in the center of the line wind up both lines in the same direction according to the arrows on the spool