Highcharts: How to rename series

This seems to work :

chart.series[1].name="Renamed";
chart.redraw();

actually, there's a way now. In highchars 3.0 series added a new api, called update:

chart.series[0].update({name:"name u want to change"}, false);
chart.redraw();

it will not only update the series name below the chart, but the name in tooltip as well.

Cheers!