Kendo Gantt dynamic data insertion without reload

[Azeem]

i need to insert new dataitem to the existing kendo gantt data source. but i cant able to do. i have used javascript splice method also, but not working

$("#gantt").data("kendoGantt").dataSource.fetch(function () {

    //newJsonData contains the objects for insertion

    $.each(newJsonData, function (i, row) {

       //insert data to gantt data source

       this._data.pop(newJsonData[i]);

   });

});