How do I update a single key from a dictionary inside of a Player's DataStore key?

This is the format I'm using for the dictionary to SetAsync()

local PlayerData = {
	["Models"] = {
		
	};
	["Resources"] = {
		["Money"] = 1; -- I want to update one of these 
		["Population"] = 12;
		["Wood"] = 24;
		["Stone"] = 64;
		["Electric"] = 14;
		["Water"] = 163;
	}
}

This is the script I wrote to tell the server that the player's Data was changed

local Event = game.ReplicatedStorage.remoteevents.SaveData
wait()
for i, resource in pairs(game.Players.LocalPlayer:WaitForChild("Resources"):GetChildren()) do
	resource:GetPropertyChangedSignal("Value"):Connect(function()
		Event:FireServer(resource, resource.Value)
	end)
end

Corresponding remote event script:

game.ReplicatedStorage.remoteevents.SaveData.OnServerEvent:Connect(function(player, resource, value)
	player.Resources[resource.Name].Value = value
	DataStore.UpdateResource(player, resource.Name, value) -- this is my own function inside of a modulescript
end)

Lastly, here is my ModuleScript function:

function DataStore.UpdateResource(Player, Resource, Value)
	local DataStoreService = game:GetService("DataStoreService")
	local Data = DataStoreService:GetDataStore("PlayerData"):GetAsync("Player_" .. Player.UserId)
	DataStoreService:GetDataStore("PlayerData"):SetAsync(("Player_" .. Player.UserId)["Resources"][Resource], Value) -- Everything works fine up until here
end

error: 15:05:37.513 - ServerScriptService.SaveDict.SaveData:15: attempt to index field 'Resources' (a nil value) How do I access a single key inside of the dictionary "Resources" Which is inside of the dictionary "Player_26246132"? any help is greatly appreciated!