Trying to create a question where people can choose an option from a check box and then the next question will ask them about the specific option they checked (i.e. pick your favorite car from a list, what is your favorite feature of that car next with another checkbox of options)
You can do this, but the followup question has to be on the following page. Because a checkbox question can return multiple resonses, its answers are not evaluated by SurveyGizmo until the respondent hits the NEXT button.
If you need more information you can consult the SurveyGizmo documentation: