1. Once the data is loaded, open the App overview window and create a new sheet.
2. Enter the Edit mode by clicking on .

.

3. Drag across the  object from the Assets panel on the sheet.
4. Name it Moving Annual Total.
5. Add [MAT MonthYear] as the dimension.
6. Next, add the following measure and label it MAT Sales:

SUM({<[MAT 
   MonthYear]={">=$(vRolling12Months)<= 
   $(vMaxMonth)"}>}Sales)  

7. Save the application and click on .
8. Under Appearance, select the chart style as .
9. Check the Show Data points.
10. Switch on the Value Labels options to show values on each data point.
11. Under X-Axis:MAT MonthYear, switch off Continuous and disable Use Continuous scale.

12. The final trendline chart should look as follows: