I'm struggling to find a way to modify an object after I jave created it. For instance, is there no way to change the location or depth of a hole after it has been placed? Or change the center and/or radius of a "Circle Center Radius" object? It would seem that simply double clicking the object would put you back into editing mode and let you modify any or all of these parameters either numerically or through OSCs.
Check for free classes here http://au.autodesk.com by Kevin Schnieder. I think the videos will answer all of these questions.