Multiple Choice ( More than one Answer correct )

Let´s say I got a question with 4 Answer Options, and 1+3 are correct but 2+4 not. So how could I set that up in storyline since there is only the option to set 1 correct answer?

It has been four years, so I hope you found a solution!

But if not, what you can do is set up an offscreen True/False quiz question (T/F), then create a dummy multiple choice question onscreen (1, 2, 3, 4 radio buttons).

Set up triggers so if 1 or 3 are selected, the state of True on the real quiz question (which is offscreen) = Selected.
If 2 or 4 are selected, False = Selected.

The Submit button will then pass on T/F as the answer.

(This is the same type of method provided in a different help question I've come across on these forums, so if my suggestion works, thanks goes to the original poster.)

You will also have to set up a state to ensure that one of the numbers (1,2,3,4) is selected before Submit can be clicked on.