While It's not at all obvious how to augment a direct member accessibility like foo.num = num, You can easily augment your regular setter with a further power parameter: Under is another instance on how @property might help when one particular has to refactor code and that is taken from https://whitelandurbanresortsector103.in/whiteland-urban-resort-gurgaon-a-premium-lifestyle-destination-in-sector-103/