The mappings inside Epic Link don't work when used inside one iteration

#{for IssuesInEpic}
Key: ${IssuesInEpic[n].Key}
Summary: ${IssuesInEpic[n].Summary}
Description: ${IssuesInEpic[n].Description}
// This doesn't work
Epic key: ${IssuesInEpic[n].Epic Link.Key}
#{end}