SSRS Date question using Globals!ExecutionTime

Question

Hi I am trying to print a report in SSRS with two dates in the header. the first date will be dated one week ago and the second will be todays date..

I can't seem to figure out how to get the date for one week ago working.. I have tried

**Globals!ExecutionTime - 7** 

as the expression but it does not work. any ideas?

Answer 1

=DateAdd("d", -7, Globals!ExecutionTime)