thx.
Npcname.txt is correct.
if i modify the name "Spider" to "Spider2",it works.
but when i modify the name "Dark Mammoth" to "Dark Mammoth2",it did not work.
i cant find "Bad Giant Mammoth" in the Npcname.txt,it shows: 562 1 "Dark Mammoth" and i tried to modify the monster.txt in server,then the name on the top of the monster works,
but the name in the top of the window as the image shows did not work.