Ad a quiz with different scores for each question and with final score at the end

[Amadeus]

Hello,



I want to make a quiz in PowerPoint 2007.
There are 10 questions that are graded differently (1, 2 or 4 points)
For each multiple choice I've made ​​a hyperlink:
If the answer is correct, you go to the next slide with "your answer is correct" and I've made a button "go to the next question,"
When error, I've made a hyperlink to the slide "your answer is wrong", with a button with "back to the question".
So the intention is that at the end I get a score on 20 points
Can anyone help me to write the codes?