How do I dynamically change a data point in Highcharts using JavaScript

Question

I'm trying to change a point in an existing series. From looking at the API, I've been trying the following:

chart.series[0].data[0].y = 43;
chart.redraw();

I'm sure I'm missing something simple but I can't figure it out. Thanks for your help.

Answer 1

Well it works properly for both coordinates: http://jsfiddle.net/PsBh7/

 chart.series[0].data[0].update({
                x:20
            });