21st January 2011

In this lesson I have finally created the book and unbook buttons. This is through many IF statements. To limit the bookings from going over 20 bookings I used an if statement stating that if the certain box selected is 20 then there will be a message saying class full and that you can't click anymore as the number stays on 20. I also did the unbook macro which was just the opposite of the booking formula. To limit each booking from going to negatives I wrote a formula similar but instead using the number 0 than 20.