Data being printed as username?

So for my game, I'm trying to make a GUI which allows users to enter the ID of a sound and fire it to the server

game:GetService("Players")

script.Parent.MouseButton1Click:Connect(function()
    local player = game.Players.LocalPlayer
    local id = script.Parent.Parent.ThemeId.Text
    game.ReplicatedStorage.DataSaveEvent:FireServer(id)
end)

This is the Localscript that acts as a Save button, ThemeId is a TextBox which allows the user to enter the Id

game.ReplicatedStorage.DataSaveEvent.OnServerEvent:Connect(function(id)
    print(id)
end)

This is the server event, it gets picked up correctly, but when I check the output, it prints my Username instead of the text in the TextBox. Anyone see the issue?