PI Display Document not updating

Maybe you can help.  I am a novice at integrating PI into other programs.  

My goal is to have a PI trend displayed on a Cimplicity screen that periodically updates to display the past hour or so of data.  

I can insert an OLE Object - "PI Display Document" into my screen and while I have the document "open" the data will update.  However, if I try to view the screen with CimView, it will not update.  

What do I need to do to get it to update?  Script?  If I add a script, do I need to add it to the PI Display Document, or to the Cimplicity screen?  

Thanks in advance.