Get difference for two dates in Months and Days

Hi
These are the expression you can use in assign activity

In days

int_days = DateDiff(DateInterval.Day, DateTime.ParseExact(Strinput.ToString, “dd/MM/yyyy”, System.Globalization.CultureInfo.InvariantCulture),DateTime.now())

Output type is int32
Input you can pass the string to variable named Strinput = “17/09/2022”

In months

int_months = DateDiff(DateInterval.Month, DateTime.ParseExact(Strinput.ToString, “dd-MMM-yyyy”, System.Globalization.CultureInfo.InvariantCulture),DateTime.now())

Output type is int32

You can get to know all sort of Datetime expressions from this post

Hope this helps

Cheers @aqiffm