you can use the following Xpath:
And if your solution is allowing the users to add a future date you can use the following Xpath:
[Date>='[%BeginOfCurrentWeek%]' and Date<='[%EndOfCurrentWeek%]']
What do you need?
Do you want all dates of this week (example 07Feb – 13Feb) or all days from a week ago (04Feb – 11Feb)?
You can already look into this documentation and see what is possible in the examples
What you could do is use the following function in your XPath: addDays('[%BeginOfCurrentDay%]', -6)
This way you would be able to get the dates for today and the 6 days before. Hope that helps!