I'm running into difficulty adding custom tooltips to my chart. Even in the demos, this is never done with a chart of type 'ClusteredBars'.
When I do something such as:
chart.addSeries('Series B', [2,3,4,5]);
This works fine.
However, if I do:
chart.addSeries('Series A', [{x: 1, y: 1, tooltip: 'First'}, {x: 2, y: 2, tooltip: 'Second'}, {x: 3, y: 3, tooltip: 'Third'}, {x: 4, y: 4, tooltip: 'Fourth'}]);
