I want to control which tab view a user would have displayed to them based on if their operator has a certain skill present, regardless of rating, otherwise display a different tab with less information.

I've created a skill "pilot_users", and want to now create a When rule to use as a condition for visibility of a tab.  I see their is an OOTB pega function hasRequisiteSkills, so attempting to use as @hasRequisiteSkills(OperatorID, "pilot_users", tools), but getting an error.  Another issue is this function does not even appear within the browse window within expression builder.  Is there a better way to accomplish this?