Why my modeled object can't be found in folder views.

Hi all,

     When I used Information Modeler in Windchill 9.1, I created a Class extends wt.fc.RevisionControlled, then pesisted it into database. With the method FolderHelper.service.findFolderContents(Folder), I can list it in shell. But It dosn't displayed in the folder of the system. I need help.

     Sorry for my poor English.