In the lesson for "Create Professional Emails in the Feed", I am having an issue with the "Check Challenge" feature:"Challenge Not yet complete... here's what's wrong:The Trailhead Service Email Template does not appear to be using the Account Name field."My email template contains the following fields:{!Case.Account}{!Contact.FirstName}{!Contact.LastName}It does not seem to recognize the {!Case.Account} for the Account Name requirement. Am I selecting the wrong merge field?