I thought this should work, since \structurelistuservariable{author} works fine to call the author name into the TOC, but the same does not work for header texts it seems:

\setupheadertexts

  [{\hfill\getmarking[\structurelistuservariable{author}]\hfill}][] 

  [{\hfill\documentvariable{metadata:title}\hfill}][] 

But it doesn't. What am I doing wrong?

Julian