I'm a bit new to this, but I think you are having a problem similar to mine. I was trying to put an invisible box in front of my camera, so that I could use object collision (4,0) to see what was directly in front of my character. (so they could use it, pick it up so on.)
The problem was, i was using the lock object on command, and discovered that when i do that the object's position never changes, it is drawn in the same place. If the Glue object to Limb works at all similarly, then the object never actually moves, it just looks like it.
Think Gad fro Spill Chock!