FLAC compression level when using Macro Manager

I’m batch exporting a lot of files in FLAC format and would like to use compression level 0 for these, however when using the Macro Manager, it seems to only use the default compression level.

I can export these FLAC files individually at compression level 0 fine using File>Export, but this setting doesn’t seem to carry over the Macro Manager. Is there any way to export FLAC files using Macro Manager at compression level 0?