I've created the behemoth quest rewards to your datapack.
function onUse(cid, item, fromPosition, itemEx, toPosition)
if(item.uid == 1296) then
if(getPlayerStorageValue(cid, 1296) < 1) then
setPlayerStorageValue(cid, 1296, 1)
doPlayerAddItem(cid, 2466, 1)...