jump to slide option not available for button Adobe 5.5

Hi,

I am creating a frequently asked questions page using Adobe Captivate 5.5.  I am using buttons for each question (currently 8 button questions on the slide).  I would like to set the button to jump to another slide with the answer so the user gets the answer by clicking on the button question.  However in properties the jump to slide... option is gray while all other options work. 

Does anyone know how to allow this option or can anyone offer suggestions for achieving the same results in a different way?

Thanks,

Sandra