Ladies and gentlemen i thank you for your assistance in my system that i have been developing. my organisation is very impressed by it.
i was thinking of a situation whereby my system could give a notification when a person's copies he subscribed run out. i mean when the copies remaining fall to zero it has to notify that so and so dont have copies remaining. and it doesnt have to continue subtracting into the -1, -2, -3 etc. it has to stop at zero.