Sample JSON “[{\”x\”:10,\”y\”:100},{\”x\”:20,\”y\”:110},{\”x\”:30,\”y\”:120},{\”x\”:40,\”y\”:10},{\”x\”:50,\”y\”:450},{\”x\”:60,\”y\”:30},{\”x\”:70,\”y\”:20},{\”x\”:80,\”y\”:10},{\”x\”:90,\”y\”:20}]”
To confirm it does work you just have to hide then unhide the series from the legend.
