getReport issue

How come I am getting null value when I do the getReport() here. 
Please help.
pivot[x] = new Flexmonster({
container: "#pivot-container" + x,
licenseKey: "???",
componentFolder: "assets/plugins/flexmonster/",
width: "100%",
height: "50%",
toolbar: true
});
var flex = {
"dataSource": {
"type": "json", "data": JSON.parse(obj.content)
},
"options": {
"defaultDateType": "date string"
}
};
pivot[x].setReport(
flex
);
console.log(pivot[x].getReport());