Many many thanks for your reply! I will make those additions and see what happens!
Presently I only have one frame on the timeline which has all of the questions on it. Eventually once the user has answered all of the questions and have pressed 'submit' they will be taken to the appropriate frame with their result. At the moment I just want the score to be displayed so I can be sure the variables are all working ok and that the right number is being produced.
Jason