无法从WatchKit控制器更改视图

I added a bunch of WKInterfaceLabels to the storyboard, added them as IBOutlets in InterfaceController.h, and used the SetText method to set some text on them. However, I get no change on the view. The console gives the message "Unknown property in Interface description" for each label. How do I fix this?I added a bunch of WKInterfaceLabels to the sto