I'm having a problem when dynamically adding series to a chart.
I have some code that dynamically creates a model from JSON data
that I receive from the backend.  Eventually, i'll create a new
line series object and add it to an array. Then i'll set the
series to the chart object like so. Creating a new series is
done via this simple function. I tried
Ext.create('Ext.chart.series.Line') and new
Ext.chart.series.Line(), it made no difference. createSeries:
function (index) {         return {             type: 'line',
xField: 'logged_date',             yField: 'disk' + index,
style: {                 stroke: '#ED1C24', lineWidth: 2
highlightCfg: {                 scale: 2             marker: {
type: 'circle', stroke: 'ED1C24',                 fill:
'#515151', lineWidth: 1,                 radius: 3, shadowColor:
'rgba(0,0,0,0.7)',                 shadowBlur: 10,
shadowOffsetX: 3,                 shadowOffsetY: 3,
fx: {                     durat