Sum of Costs in current week in Textbox

[#1]

Hello everyone

I would like to show the sum of my Field "costs" in a textbox. But only of the current week. What is the expression for this?

Thank you very much in advance...

[giakoum]

isn't that the same as mine?

=Sum({<Week={"$(=week(today()))"}, Year={"$(=Year(today()))"}>} costs)

[#3]

Yup, sorry.

[giakoum]

np, I was just wondering