A few things may cause a User Controlled Attribute not to show up in your views:
The level for the attribute isn’t included in the view. Verify the level has been added to the rows, columns, or view filter. You may also need to edit attribute relationship selections to select if for use in the view using the Edit Attribute Relationships window for the level.
The attribute may have been disabled for use in administrator settings. Administrators can disable attributes from a Dimension window in Stratum.Viewer.
The attribute is newly added and the pending updates to Viewer have not yet been processed. Additions or edits made in User Controlled Attribute Maintenance won’t be reflected in Viewer until after the next Full process happens in Stratum.Connector.