Help with the quiz template

Hi, I new to scripting. I’ve created a quiz using the template that comes with MX. I’m using only the true/false components. I want to add a good/or bad image depending on the the score. If the score is 50% or above the good image will appear. If the score is lower the bad image will appear. How do I get this happen. I’m also having trouble locating the code. How do I find the code that makes the results page happen?

Thanks for your help.

Make the good/bad image a movie clip. Place the good image on frame 1 and the bad image on frame 2, put a stop action on both of those frames. Make an if statement on the clip checking the quiz variable if it is the boolean value of true or false then make it go to the certain frame via gotoAndStop();