Hi, I have a difficult time to make a coaxial hole with proe 4.0. On the "placement" tab of the hole, it should have "primary reference" box and "secondary reference" box for making a coaxial hole, but my proe 4 doesn't have them. I saw the proe 3.0 has a "primary reference" and "secondary reference" boxes. The coaxial hole is easy to make with the proe 3.0. I couldn't figure out what is wrong my proe 4.0. Please help me out.