Interior Wall Height With Dropped Ceiling

[TNMustangMan]

I am drawing up an existing two-story structure using X5. The lower level has a framed dropped ceiling, giving the rooms a finished height of 96". (The height of the exterior walls are 112".) All of the interior walls on tis level only extend up to the height of the dropped ceiling. I need to draw these walls stopping at the dropped ceiling. I have tried the "Stop at Ceiling" in the structures tab for the individual rooms, but the wall still passes through the dropped ceiling, up to the "Absolute Elevation Ceiling Height" (112"). I believe this is because of the height of the exterior walls.

Any help would be greatly appreciated. I have already wasted too much time with this problem.

Thank you in advance.