This example shows how to assign the dashboard to the viewer:
<script type="text/javascript">
	// Create the dashboard viewer with default options
	var viewer = new Stimulsoft.Viewer.StiViewer(null, "StiViewer", false);
	// Create a new dashboard instance
	var report = Stimulsoft.Report.StiReport.createNewDashboard();
	// Load dashboard from url
	report.loadFile("../dashboard/DashboardChristmas.mrt");
	// Assign dashboard to the viewer, the dashboard will be built automatically after rendering the viewer
	viewer.report = report;
</script>

In the screenshot below you can see the result of the sample code:

Assign Dashboard to the Viewer