I've been looking at the Demo app and the chart integration is really nice.  I'm trying to implement a Gauge, but I can't get it to work.  I'm using the option code from the Apache gauge example on their site, but it doesn't appear to work.  After EvaluateJavaScriptSync is executed, the result string contains '{"type":"object","value":"unsupport"}'

I also tried modifying example.html, and the value I specified is displayed on screen, but there is no gauge shown.  I feel like I'm either overlooking an obvious mistake or not all chart types are supported.  Any help would be appreciated.  I attached the modified example.

Thanks.