Ext JS 4.1.1a - Linechart - Marker only at last Point of line

[Chris79]

Hello!
I'm pretty new to this stuff and using Ext JS for only a week now. I can clarify most of my questions by searching the web, but for some other, i don't find an answer, so let me ask here.

Is there a way to show a marker in a linechart only on the last point of the line(s)?
Or if not with the default marker, is there another way, to add a sprite or so on the exact position of the last point of a line?

Here is a pic to clearify what i want:

39661

Thanks for any help or suggestion in advance.

[mitchellsimoens]

The chart will show what is in the store so if you only want to show one record, then you should only have the one record in the current dataset of the store. You can filter the rest out so you don't lose the data.