i want my anti cheat script to kick you if u run too fast without having something in their backpack or if they dont have a gamepass, i used jailbreaks gamepass for testing since i bought it here is the server script

local firstpos
while wait() do
	for i,v in pairs(game.Workspace:GetChildren()) do
		if v:FindFirstChild("HumanoidRootPart") then
			if v.Humanoid.Sit == false then
				firstpos = v.HumanoidRootPart.Position
				local player = game.Players:GetPlayerFromCharacter(v)
				wait(1)
				if (firstpos - v.HumanoidRootPart.Position).magnitude > 32 then
					if not player.Backpack:FindFirstChild("admin") or not game:GetService("MarketplaceService"):UserOwnsGamePassAsync(player.UserId,2218187) then
					print((firstpos - v.HumanoidRootPart.Position).magnitude)
					print("no")
						player:Kick("u cant cheat stupid")
					end
				end
			end	
		end
	end
end

if i delete the backpack check then it works just fine but i want it to check in the backpack since those 2 options are the exceptions to being allowed to run fast