<telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager>
         <script>
             function kendoChartInitializing(sender, args) {
                 var series = args.series;
                 for (var i = 0; i < series.length; i++) {
                     series[i].maxSize = 30;
                     series[i].minSize = 10;
                     
                 }                             
             }
         </script>