I tried setting up rule with different combination and below is what I have reached closest to what I want, but that didn't worked....
Forum Reply: Author ⇒ User: As Content ⇒ Content: Reply Count
Has anyone tried this condition? Please help.
This would actually be the number of replies on the user, not the number of replies that the user has made. Unfortunately, it appears that the number of replies by a user is not exposed to the rules engine currently.