Problem having 2 quiz on same page

Hello, this is a nice plugin.

But when I insert for example :[ssquiz id=’1′] and [ssquiz id=’2′]
When I preview the page, I can see the 2 quizzes, but if I click start, both are running the 1st (id’1′).
Is there a fix for this situation?

Thank you

http://wordpress.org/extend/plugins/ssquiz/