Include custom embedded data in email using piped text

Hello. I am trying to include some piped text that uses embedded data from a contact list. The text says (paraphrasing):

"Dear ${m://FirstName} 

We are surveying recipients in ${e://Field/Dept}  about their experiences...."

The firstName field works fine, but the "Dept" field, which comes from custom field added in the contact list is not working.

Any suggestions? Thanks!