How to award badge when player kills Humanoid(NPC)?

I want to award a badge to the player who killed (can be last hit) that monster. Im using a JeffTheKiller Model with scripts and Humanoid. When I kill it nothing happens. I don't know how to manage creator tags. I tried to put the following script under my Humanoid:

function AwardBadge(player, badgeId)
	local success = false
	local badgeInfo = nil
	local attempts = 0
	repeat
		attempts += 1
		success, badgeInfo = pcall(function()
			return game:GetService("BadgeService"):GetBadgeInfoAsync(badgeId)
		end)
		if not success then wait(5) end
	until
		success or attempts >= 3
	if success then
		if badgeInfo.IsEnabled then
			local err = nil
			success = false
			attempts = 0
			local HasBadge = false
			repeat
				attempts += 1
				success, err = pcall(function()
					HasBadge = game:GetService("BadgeService"):UserHasBadgeAsync(player.UserId, badgeId)
				end)
				if not success then wait(5) end
			until
				success or attempts >= 3
			if HasBadge then return end
			success = false
			attempts = 0
			err = nil
			repeat
				attempts += 1
				success, err = pcall(function()
					game:GetService("BadgeService"):AwardBadge(player.UserId, badgeId)
				end)
				if not success then wait(5) end
			until
				success or attempts >= 0
			if not success then
				warn("Error while awarding badge: ", err)
			end
		end
	else
		warn("Error while fetching badge info: "..badgeInfo)
	end
end


script.Parent.Died:Connect(function()
	local creator = script.Parent:FindFirstChild("creator")
	if creator ~= nil then
		AwardBadge(creator.Value, 2124659474)
	end
end)