How to dynamically pick the date from the below mentioned format

Hey @anjani_priya

Use the following code in assign activity

If( New DateTime(Now.Year, Now.Month, 1).AddDays(-1).DayOfWeek = DayOfWeek.Sunday OrElse New DateTime(Now.Year, Now.Month, 1).AddDays(-1).DayOfWeek = DayOfWeek.Saturday,
New DateTime(Now.Year, Now.Month, 1).AddDays(-2).ToString(“yyyy-MM-dd”),
New DateTime(Now.Year, Now.Month, 1).AddDays(-1).ToString(“yyyy-MM-dd”)
)

For choosing the date dynamically use can tweak the selector using attributes like aaname or innertext

Hope this helps!