Set analysis in a variable time window

[matbelli]

Hi, i need to calculate the sum of an import in a time window of 30 days, that user can choose clicking on the date.

So i have to click on one day and it should calculate the sum of these values in case the field is ACQ/VIN= 'ACQUISTO' in the previous 30 days.

How can i do it?

[Anil_Babu_Samineni]

Perhaps this?

Sum({<ACQ/VIN= {'ACQUISTO'}, DateField={">=$(=Date(Max(DateField-30),'DateFormat'))<=$(=Date(Max(DateField),'DateFormat'))"}>} Value)