// Get a service used to work with express report
var eaxMdService = expressBox.getService();
// Get express report document
var eaxAnalyzer = expressBox.getSource();
// Get data source parameters panel
var dataSourceParamsPanel = expressBox.getPropertyBarView().getDataSourceParamsPanel();
// Expand and display the Data Sources Parameters tab
dataSourceParamsPanel.setDestsSectionVisible(True);
dataSourceParamsPanel.expand();
dataSourceParamsPanel.show();
// Determine metadata
var destinationData = {
    CubeKey: 4,
    CubeId: "FULL",
    DestMeta: {
        id: "FULL_VALIDATION",
        isDefault: False,
        k: 5,
        n: "Full data with the Time Series Database validations",
        vis: True
    }
};
// Determine callback function arguments
var cubeDestArgs = new PP.Mb.Ui.PropertyChangedEventArgs({
    PropertyName: PP.Exp.Ui.ControlType.CubeDest,
    Metadata: destinationData,
    TypeUpdateData: [PP.Exp.Ui.ViewTypeUpdate.DataView, PP.Exp.Ui.ViewTypeUpdate.Ribbon, PP.Exp.Ui.ViewTypeUpdate.PropertyBar]
});
// Determine callback function
var onSetDataSourceDestination = function (sender, args) {
    expressBox.getDataView().DocDataChanged.fire(this, args);
    expressBox.getPropertyBarView().refreshAll();
}
// Set a new display option for data source
eaxMdService.setDataSourceDestination(eaxAnalyzer, destinationData, PP.Delegate(onSetDataSourceDestination, this, cubeDestArgs));