How To Make The Hostile NPC Recognize and gives exp to the killer?

hello there ,

so recently im planning to make a rpg game and when testing using roblox studio play mode but im having trouble with the stats system that gives exp when a player killed a npc

the script in the weapon (using regular script and it also says the player cant be found) :

 local tool = script.Parent
local candamage = tool:WaitForChild("CanDamage")
local player = game.Players.LocalPlayer

tool.Blade.Touched:connect(function(p)
	local char = p.Parent
	local hum = char:FindFirstChild("Humanoid")
	local hitsound = tool:WaitForChild("Hit")
if candamage.Value == false then
	if hum then
			candamage.Value = true
			hitsound:Play()
			hum.Health = hum.Health - script.Dmg.Value
			wait(1)
			candamage.Value = false
			local tag = Instance.new("StringValue",p.Parent.Humanoid) -- creates new value
        tag.Name = "creator" -- sets the name
        tag.Value = player.Name -- sets it to the name of the killer (i hope)
		end
end
end)

the one inside the npc (using script):

local human = script.Parent:WaitForChild("Humanoid")
human.Died:connect(function()
    local tag = human.Parent:FindFirstChild("creator")
    if tag then
game.ReplicatedStorage.Events.Geee:Fire(10,human.creator.Value)--gee is a bindable event so far i haven't got an error in the output but if there's a mistake please help me :( im still new to scripting
    end
end)

it keeps saying it cant find the creator tag

i hope it can give the player 10 exp when the player kills it

Edit: I saw the comments that i should use Event to add the tag to the npc but how do i exactly do that?

u changed

local char = p.Parent

u need change it to

local char = p.Character

instead of Parent