CompuServe Messages

I am trying to make sense out of the Amiga books on the subject of accessing gadgets via the console. My problem is this: I have created a cycle gadget within a window using Gadtools. I have enabled the window to return gadget up/down messages (using the sequence \X9b7;8{) and I am getting messages returned ok when clicking on the gadget. What I do NOT get is the gadget automatically moving to show the the next value. Do I need to do this automatically or have I failed to set something up. Any help appreciated. TIA Graham