Why is my gamepass purchase function not working?

So Im testing it with someone elses gamepass ID which I dont own and its not working??

Code:

script.Parent.MouseButton1Click:connect(function()

-- This code can be within a 'LocalScript' object

local MarketplaceService = game:GetService("MarketplaceService")
local Players = game:GetService("Players")

local gamePassID = 2205136  -- Change this to your game pass ID

-- Function to prompt purchase of the game pass
local function promptPurchase()

    local player = LocalPlayer
    local hasPass = false

    local success, message = pcall(function()
        hasPass = MarketplaceService:UserOwnsGamePassAsync(player.UserId, gamePassID)
    end)

    if not success then
        warn("Error while checking if player has pass: " .. tostring(message))
        return
    end

    if hasPass == true then
        -- Player already owns the game pass; tell them somehow
    else
        -- Player does NOT own the game pass; prompt them to purchase
        MarketplaceService:PromptGamePassPurchase(player, gamePassID)
    end
end