Chart only displays data of top row in grid

[barry]

Following the chart example http://www.sigmawidgets.com/products/sigma_grid2/demos/example_chart.html the chart only displays the bar chart of the very top row of data.  Is there a way to produce a chart based on the whole grid?

Also, I couldn't find any docs on how to make a pie or line chart but the example says 'Line chart, pie chart and bar chart is built in sigma grid so that end user could choose their preference when presenting data.'