A solution is not needed unless you want to find out why the json is acting as it is.
I've moved to the Google Charts methods. (http://isemanhomes.com/Admin/chart-google.php)
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.