A computerized method, system, program product and additive manufacturing (AM) system are disclosed. Embodiments provide for modifying object code representative of an object to be physically generated layer by layer by a computerized AM system using the object code. The computerized method may include providing an interface to allow a user to manually: select a region within the object in the object code, the object code including a plurality of pre-assigned build strategy parameters for the object that control operation of the computerized AM system, and selectively modify a build strategy parameter in the selected region in the object code to change an operation of the computerized AM system from the plurality of pre-assigned build strategy parameters during building of the object by the computerized AM system.