Yep thanks for that matt but the thing is i apply the dgs material for the walls but when i apply white for the ceilings or walls it doesnt look like its white like the white in ur interior render? i really do not know wot im doing wrong!!! when i render my walls which i want to look white they look grey.

i will attach to this message my render of the project and also after i will attach the maya file and maybe u could download it and work with it and see if u can come up with any different results.