Hi @Ruriko, from quickly taking a look into this this doesn’t seem to be a feature offered by the current version of the Reddit node I am afraid.
You could make the request manually via the HTTP Request node. From looking at their docs it seems this requires a flair_id and/or flair_text (I haven’t used this first-hand so can’t confirm exactly how to use these unfortunately). If you upgrade to n8n’s latest version you could re-use the existing credentials from your Reddit node:
You might also want to leave a vote on the feature request you have raised for this to make it count.