When using parameters in chart titles and other visible locations. You might need to format the parameter to remove the comma in a year.
To format the parameter we will need to go into the Builder. Once we are in the Builder we need to get to the Data Set tab. Next, we will need to Edit our parameter by clicking on the Pencil Icon. The Edit Parameter menu will popup. Find the Display Format section and hit the Edit button. The Number Format screen allows you to make the changes. For this example, I want to remove the Thousands Separator.
After the changes have been made the comma in 2020 should now be edited out.