How to display markers in vaadinvisualization map(google map)

General
1

In vaadin visualization map , i have trying set option datamode to set markers but does not work
Example:
map.add(37.4232, -122.0853, “Work”);
map.add(37.4289, -122.1697, “University”);
map.setOption(“showTip”, true);
map.setOption(“dataMode”,“markers”);
can anyone give idea

2

In vaadin visualization map , i am trying use option (datamode) to set markers but does not work
Example:
map.add(37.4232, -122.0853, “Work”);
map.add(37.4289, -122.1697, “University”);
map.setOption(“showTip”, true);
map.setOption(“dataMode”,“markers”);
can anyone give idea

3

No one is have brain and idea