I am attempting the System Architect Essentials (7.2) course section entitled Configuring a Work Party. When I attempt to add a work party, I am getting an error adding the last three rows specified in the "Create the EmployeeParty data transform to copy data to the work party" section. The error I am getting is;

"Source— Property @baseclass.Employee is undefined."

I have gone through all previous lessons and confirmed that I have performed all of the previous steps according to the Exercise Steps. I assume this means I am missing the inheritance portion, but that looks correct to me. Is there anything I am missing?