Help with zombie spawner

for some reason the code skips over this i put a comment next to the skip. I want to know how to fix this. Thanks :)

while wait(10) do
	local rand = math.random(1,2)
	if game.Workspace.MainGame.ZombieAmount.Value > 0 then
		if rand == 1 then
			if game.Workspace.MainGame.Barrier1.Value == true then
				game.Workspace.MainGame.ZombieAmount.Value = game.Workspace.MainGame.ZombieAmount.Value - 1--SKIPS HERE
				zombie = game.ReplicatedStorage.Zombie:Clone()
				zombie.Parent = game.Workspace.ZombieSpace
				zombie:MakeJoints()
			end
		end
	end
end