SAP APO - Bar Chart Graphics Add Data Labels

Hi,

I am working as a Demand Planner and it is a new function to me.
Do you know how I can add data labels to the chart below ? I would like to see the numbers of each serie (Actual Sales & Demander Planner Forecast), or when I click on it (my preference), or automatically on the chart.

I thought that if I ticked "ShowLabel" it would work, but it did not.

Thank you in advance.

Best regards,
Olivier