Display gaps in a Sencha Touch Cartesian Chart

I would like to display gaps in a chart serie. I'm using Sencha Touch 2.4.1. I already tried to set the data to "no data" which results in a solid line between the surrounding data records (Sencha Fiddle). Setting the data to null results in a zero value in the chart.

Is there a way to display a gap in the serie?



Regards

Sven

Display gaps in a Sencha Touch Cartesian Chart