Help with get DataStore Information using TextBox

Help and Feedback Scripting Support
#21

Maybe this is something you should consider (from the Roblox wiki):

Data stores can only be accessed by the server through Scripts . Attempting client-side access in a LocalScript will cause an error.

Essentially, you will have to fire whatever string you have when the player leaves to the server (via a RemoteEvent), and let the server update the data and handle the datastore calls on PlayerAdded / PlayerRemoving and/or through a periodic saving system (as DataStore call rates are limited).

-- LocalScript
local remote = ur.remote.here
local textbox = script.Parent.Parent.TextBox
script.Parent.MouseButton1Click:Connect(function()
    remote:FireServer(textbox.Text)
end)

-- ServerScript
local textInfo = {}
Players.PlayerAdded:Connect(function(player)
    local success, data = pcall(function()
       return DataStore:GetAsync(player.UserId)
    end)
    if success and data then
       textInfo[player] = data
    end
end)

local remote = ur.remote.here
remote.OnServerEvent:Connect(function(player, text)
   if type(text) ~= "string" then
      return
   end
   -- probably good idea to filter the text in case you need to display it
    textInfo[player] = text
end)

-- Set up PlayerRemoving event to make sure that you save the text when the player leaves
-- You could also set up a periodic saving system if that's something you want to do

-- very basic example, you can build on this if you want
Players.PlayerRemoving:Connect(function(player)
   local text = textInfo[player]
   local success, err = pcall(function()
       DataStore:SetAsync(player.UserId, text)
   end)
   if not success then
      print(err)
   end
end)
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