ALBUMARTISTSORT tag needed for Dynamic Naming

[manowell]

Using MP3tag to manage tags, have Album Artist Sort fields populated. Would like to use this in Dynamic Naming during a conversion with Batch Converter:
The field is highlighted in yellow.
What naming syntax would I use? I've tried various tag and user defined tag formats as noted in Batch Converter Dynamic Naming, but haven't found one that works.


ALBUMARTISTSORT.jpg

[Spoon]

[tag]albumartistsort[]