How To Make A System Where If You Kill Someone The IntValue Goes Up By One?

So the question is kind of self explanatory. I thought my script should work, but it doesn't. Here it is:

game.Players.PlayerAdded:connect(function(player)
    local folder = Instance.new("Folder",player)
    folder.Name = "leaderstats"
    local currency1 = Instance.new("IntValue",folder)
    currency1.Name = "Kills"
    player.CharacterAdded:connect(function(character)
        character:WaitForChild("Humanoid").Died:connect(function()
            local tag = character.Humanoid:FindFirstChild("creator")
            if tag ~= nil then
                if tag.Value ~= nil then
                    -- Here tag.Value is the player who killed us, so find their leaderstats
                    local killersLeaderstats = tag.Value:FindFirstChild("leaderstats")
                    if killersLeaderstats then
                        -- Award the Kills to the player that killed us
                        killersLeaderstats.Kills.Value = killersLeaderstats.Kills.Value + 1
                    end
                end
            end
        end)
    end)
end)

Any idea what the problem is. Hope you can help thanks!

Creator ObjectValues are an ancient and badly designed solution for knockout leaderboards. Instead, modify your weapons. When the weapon does damage to a player, check if the player's new health is <= 0. If so, the player who attacked with the weapon killed the dead player, and you can award them one kill.

Additionally, RBXScriptSignal:connect() is deprecated, you should prefer RBXScriptSignal:Connect().