I'm playing with a simple charting app to familiarise myself with Chart, but i'm struggling due to lack of detail or examples in the docs.
So far I have a nice bar chart which gets it's data from a store and redraws with nice animation when I sort or filter the store - looking good.
What I want to do next is to add a bitmap sprite at the end of my bar. I would also like to use a tiling background image as a fill instead of a flat colour, but I am having no luck trawling the web to find an example of where someone has actually done this.

In my code I tried this, but it doesn't work:
series: [{
            type: 'bar',
            background: {
                image: 'tile.jpg'
Any tips appreciated!