It really helps if you can boil it down to a simple example and post the code. Perhaps the following link is related to your problem. If not, you should at least post the compiler version, platform and if possible code to reproduce it.
Structures are supported so I suspect there is an ordering issue or some other problem. Can you please send the example code to trs@pgroup.com and ask Customer Support to forward it to me? Also, please indicate which version of the compiler you’re using as well as the operating system.