Recently added Datastores to a custom view

Hey,

I am trying to generate a custom view that shows all and only the Datastores that have been added in the last 7 days.

We would see Environment overview --> recently added objects last 7 days --> filter datastores

However to our great shame we are failing to bring this locked tag into a custom view. Am I missing the obvious here that will make me sink into the ground in shame?

vrops version v6.01