Skybox problem

[legacy-ganjaman DBU]

Im working on a map and i got this problem with the walls im using to show the skybox , it doesnt just show the skybox but also whats behind the wall im using.
http://www.teddy.cistron.nl/screens/skyoff.jpg

is when the skybox is turned off

http://www.teddy.cistron.nl/screens/skyon.jpg

and this with on.

And i need a solution , so covering it up with a wall or what is not what im looking for , the thing is in a older version of this map i did not have this , it just showed the skybox.

Anybody??!! pls!!

[legacy-ChookWoods]

you need to zone the map, once its zoned the rooms behind the sky wont show (as long as it is all in a different non visible zone than the one you are in to take them screenshots)

[legacy-sandorski]

Does it happen while Playtesting?

[legacy-[ARC]Slasher]

that has something to do with lighting when you dont zone it off from the outside. the light inside makes you see through the wall. I had it happen to me before , Just zone it and light it independently.