Ahh sorry about that @jimijim, the example wasn't meant to be replicated just to illustrate the way i behaves in preview mode.
As for as your setup goes I'd just recommend passing either {{ filefile.value[0] }} instead of {{ filefile.value }} :
Or, following these docs and using {{ {...filefiles.files[0], data: filfile.value[0]} }}:
Can you let me know if either of those work?

