A question on mazes

[kpepp]

Hello everybody,
I have recently added two new mazes in my mod. The first uses the same level type as the catacombs, act 1, whereas the second one the same as the maggots' lair, act 2. Although they work well in the game, no doors are spawn at both mazes. I have been experimented for a while with objects columns at levels.txt but without any success. Please note that this problem is not applicable when preset levels are used instead. Any help will be appreciated.