To display the dimension as you want you need to set the dimension tolerance to limits in the properties dialog box and specify the upper and lower tolerance. Dual dimension option is for dual unit dimensioning. If you want to use the dual dimension option then you must enable it in the drawing setup file.
Check the text_orientation setting in your drawing setup file. Dimensions will appear stacked when the drawing setup file option text_orientation is set to horizontal. The dimensions will appear side by side when the option is set to either parallel or parallel_diam_horiz.
Thankyou thankyou thankyou you have solved my problem which i've been having ever since i've been using pro/e which is now about 4-weeks. I've asked everyone at work even people who have been using the system for 4 years. I could not get an answer from the teacher when I went on the tranning course through PTC.
So once again thank you
The setting which I required was
iso_parrallel_diam_horiz in the text_orientation setup