Multiple annotation verticalLines using mapAs dataset

I would like to add vertical lines to graph as markers for interesting events.

The only way i can see to add multiple lines is to define multiple controller.verticalLine annotations like

controller.verticalLine({
xAnchor: "2007-09-23"
});

controller.verticalLine({
xAnchor: "2008-10-23"
});

Is it possible to do this nicer like

controller.verticalLine([{
 xAnchor: "2007-09-23"
},
{
 xAnchor: "2007-10-23"
},
{
 xAnchor: "2007-11-23"
 }]);

or better, pass it a data set using mapAs, where each value in the mapping would be a xAnchor value ?

var mapping = dataTable.mapAs({"value": 4});
controller.verticalLine(mapping);

Thanks

Solution

You can define the lines from the dataset with the custom field and get them from data with the get() method: https://api.anychart.com/latest/anychart.data.Mapping#get

mapping.get(i, "anchor"),