scoring in a multiple choice question list
I have created a quizz under the form of a multiple choice (in Storyline). There are 4 possible answers to the question. 2 of the 4 answers are the right ones.
Tell me if I am wrong ... but if I choose only 1 of the 2 right answers, the result will be 0 good answer thus 0 %. Although 1 of 2 should give a result of 50 %.
The question is : is it possible to make the software recording 50 % as result and not 0 % in that situation ? I guess that I could us variables but I don't have any idea how to make it possible ...
Thank you for your help and support.