Well, for a newbie, there's no way to know exactly how to make an object move, unless you ask somebody.
As well as that, the player has to fill in three separate fields that already relate to a different property (Dimensions); rather than having another number field for MoveDistance. Just seems like it'd be more intuitive to have a little text box above the movement buttons, which relates to how far the object will be moved when the buttons are pressed.