Step 1 – Creating the necessary variables

The first step toward creating this advanced interactive sequence is to create the Variables that you will need to track the ticket types that are visited by the students:

1. Still in the Chapter14/takeTheTrain.cptx file, use the Project | Variables menu item to open the Variables dialog.
2. At the top of the Variables dialog, click the Add New button.
3. Type v_standardTicket_visited as the Variable name.
4. Type 0 as the initial value of the Variable.
5. Optionally, type a meaningful description into the Description field.
6. Click the Save button to save the new Variable.
7. Repeat the preceding process to create the v_pass_visited and v_subscription_visited Variables. Be sure to give the new Variables a value of 0.

Make sure that the Variables dialog looks like the following screenshot before moving on:

Each of these three Variables has an initial value of 0, indicating that the corresponding slides have not yet been viewed by the student. You will...