If you create a schedule of the information you want to make available in the BIMX model, you can then link that schedule to the BIMX export.
I have a set or properties that store useful text and hyper-link info that I can then make available to the BIMX viewer. Its very powerful and if you set it up in Publisher, everything gets updated each time automatically.
Tim Ball
AC26, iMac
User since V5