how do you create a room with a half wall without the ceiling collapsing

[gareth]

i have a plan laid out with a half wall (36'), which works fine in 3d view until i make the area an actual room. Then the ceiling pulls down to meet the half wall. i'll try to include a screen shot. how do i make the ceiling stay flat and ignore the 'gravity' of the half wall?
thanks for any help.

[hansmex]

Gareth,

Don't make a room by double-clicking, but by indicating the corner points one after the other. Draw one room where there should be a ceiling, and where the walls are of equal height (or at least 3 out of 4). Draw a second room where there shouldn't be a ceiling.

I hope this makes sense. If not, [url=mailto:[email protected]]send me[/url] your file and I'll see what I can do.

Hans