Draw lines between points in Chart series?

I must be missing something in Highcharts…

I have the following before render:

var chartObj = arguments[0], $ = skuid.$,<br>Appts = chartObj.series[0].data,<br>&nbsp; &nbsp; Comp = chartObj.series[1].data,<br>&nbsp; &nbsp; Shows = [];&nbsp;<br>for (var i = 0; i &lt; Appts.length; i++){<br>&nbsp; &nbsp; Shows.push(Comp[i] / Appts[i]);<br>}<br>var newSeries = {<br>&nbsp; &nbsp; name: 'Show Rate',<br>&nbsp; &nbsp; data: Shows,<br>&nbsp; &nbsp; type: 'line',<br>&nbsp; &nbsp; yAxis: 'rateaxis',<br>&nbsp; &nbsp; lineWidth: 2,<br>&nbsp; &nbsp; dashStyle: 'solid',<br>&nbsp; &nbsp; connectNulls: true<br>};<br>chartObj.series[2] = newSeries;

I end up with this:

I shouldn’t need to set lineWidth and dashStyle, because those are defaults. Either way, I’m not getting a line.

What am I missing? Thanks!