Why Am I Getting an Error in this Simple Game Pass Script?

I'm trying to make a brick that, when it is clicked, prints "Game Pass" if the user owns the game pass or otherwise prompts the user to buy the game pass. This is what I have; however, unfortunately, it doesn't work:

script.Parent.Click.MouseClick:Connect(function(player)
	if player then
		local owns = game:GetService("MarketplaceService"):UserOwnsGamePassAsync(player, 00000)
		if owns then
			print("Game Pass")
		else
			game:GetService("MarketplaceService"):PromptGamePassPurchase(player, 00000)
		end
	end
end)

I get the following error when calling the UserOwnsGamePassAsync function: "Unable to cast Instance to int64"

Any help would be greatly appreciated!

It must be player.UserId, not player. player is an Instance, the first variable should be a player's userid. This applies to both of them by the way.

So:

script.Parent.Click.MouseClick:Connect(function(player)
    if player then
        local owns = game:GetService("MarketplaceService"):UserOwnsGamePassAsync(player.UserId, 00000)
        if owns then
            print("Game Pass")
        else
            game:GetService("MarketplaceService"):PromptGamePassPurchase(player.UserId, 00000)
        end
    end
end)