How to draw value for just the selected value?

By default, I hide the y values from the data set.

When selecting a data point in the graph I can detect the point highlighted via the delegate.

```
func chartValueSelected(_ chartView: ChartViewBase, entry: ChartDataEntry, highlight: Highlight) {
chartView.data?.setDrawValues(true)
}
```

From the delegate, I display all the values from the data set. Is there a way to only display the values for the selected point? I peaked into the documentation and could not seem to find it...