Immovable Rod of Collapsing

10ft pole: Action speak a command word for it to collapse into a 1-foot-long rod. Action speak a different command word, cause the rod to extend to a pole; will elongate only as far as space allows. Action speak a different command word causes the rod to become magically fixed in place (vertical only). Action to speak different command word to move it. Limit 8,000lb . 1D4 charges{x}