Unfortunately, it does not seem like you can use dynamic variables to populate a hierarchy variable.
For instance, if you want to do this:
s.hier1 = "D=gn" to automatically assign the pagename to a hierarchy variable (a common use-case), it cannot be done.
Can we get this enabled so we can populate hierarchy variables like we would with eVars and props?
s.hier1 works with dynamic variables for me.
Assuming that you're not on a mobile implementation, please try "D=pageName"