Wall setting dialog box? Not sure what you are asking, but after you make the profile, the "walls" height and width are adjusted in the wall settings dialog box. If you are asking about where you define the vertical and horizontal range in which the wall will stretch (as Link implied) I have found that these lines are set to some mysterious non existent invisible pen. When they are turned on , as per the image link attached, select all an you will see the selection nodes of the lines that define the vertical and horizontal stretch limits. After these lines are selected you can change their pen number to something you can see. This might have to do with my work environment, but something to be aware of.