I wanted to make the entire dashboard weekstart as Wednesday.
I tried using the function SET FirstWeekDay=3 in the script it worked in Qlikview Version 12.
But its not working in Qlikview version 11.2 SR12.
I tried this option as well, Its seems not working
How exactly are you using WeekStart() ?
I tried testing using weekstart(Today())
It showed 29/08/2016
=weekstart(today(),0, 2 )
please see this
Redefining the Week Start
Retrieving data ...