Design studio Custom development for Donut Chart

Hi,

      Experts i was developing custom components in Eclipse for design studio, my requirement is that, i created a Donut but i was not able to make data binding that is my issue but i require code for this may be i can get help from experts please give me valuable feed back.

I was looking for

1. JS code for data binding

2. ZTL file if required

I was followed David Richardson coding which helped me for some extent but please give me some tips for above.

Thank You,

Pavan Kumar.A