 var test = [
       { "Series0": 2, "Series1": 1 },
       { "Series0": 4, "Series1": 2 },
       { "Series0": 3, "Series1": 4 }
            ];
            activeSheet.autoGenerateColumns = true;
            activeSheet.setDataSource(test, false);
            alert(JSON.stringify(activeSheet.getDataItem(0)));