Enabling condition based on completing whole roster

Is it possible to create an enabling condition (for static text) based on having completed the whole roster? Our problem is that we want to create a warning message for interviewers if they have left some part of the roster blank. We need this because there seems to be no way to translate the automatic warning message in the final completion section of the interview so we need to add it manually.

ROSTERNAME.Any(x->!IsAnswered(x.age) || !IsAnswered(x.sex))

Detects if any of the age or sex variables are left unanswered.