Show value of highest slicer selections (multi selected items in slicer

Hello friends, Hope All is well!

Please open the attachment, I need help with the powerpivot. to show the value of the highest selected months from the slicer.
instead of adding the values of the selected months.

e.g. I chose month 2, 3, 4. I want the value related to 4 to show; i.e. 40.

Can you please help me with DAX?

Thank you so much in advance.