[votan]

Originally Posted by ObjectMetadata Thanks for your reply! How do I use journalIndex? It's always nil when I print it

Its not that easy.
You should use some tool addons like zgoo.

for i = 1,QUEST_TRACKER:GetNumTracked() do
    local entry = QUEST_TRACKER:GetTrackedByIndex(i)
    d(GetJournalQuestName(entry:GetJournalIndex()))
end