Webi function help

Hi,

Here's my scenario.

Date1                  Date 2

01/01/2016          01/02/2016

01/06/2016          01/07/2016

How do I find the days between 1st row Date 2 and 2nd row in Date1. Hope this makes sense.

Like this Daysbetween(01/02/2016;01/06/2016)

Thank You

Veena M