Columna calculada

carlosayala_9 , In such case the most suitable is a new column

datediff([Porject Start Date], [project End Date], day)

If you create sumx measure , it should not show in table

Sumx(Table, datediff([Porject Start Date], [project End Date], day))

or

Sumx(Values(Table[PruBa3]) ,calculate( datediff(Min([Porject Start Date]), Max([project End Date]), day)) )

Hi carlosayala_9 ,

Does the above reply solve the problem?

If it works, please consider to mark it as a solution.

Best Regards,

Jay