Text and object value not being set in Player Removing function?

local owner = script.Parent.Parent.Parent.Owner
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local text = script.Parent.BillboardGui.TextLabel
local defaultText = "Claim"
local Players = game:GetService("Players")

Players.PlayerRemoving:Connect(function(player)
    if player.Character == owner.Value then
        owner.Value = nil
        text.Text = defaultText
        print("User left. House is now for sale.")
    end
end)

The debug print line does print, but the text does not change to defaultText, and owner.Value is not set to nil. owner.Value is an object value that is attached to the user leaving.