1. Click on hamburger icon.

2. Click on dashboard tab and open Line Chart in edit mode.

3. The Edit menu box appears as you click on Line chart icon. And a widget gets added in content place automatically in dashboard.

4. Enter Following details in chart controls:
Datasets: Country Color 2.cds
Category Axis: country
Value Column: CreditLimit
Aggregation: sum

5. Fill above details in edit box, As Shown in figure.

6. In Formatting click on General. In General click on Dynamic dataset color

7. Dynamic dataset color: colors

8. Click on Preview and Save and Exit.

9. Now, match your Line chart with the below example, it should look like the figure below: