How to pass list of values from jsp to controller using form tags binding based on checkbox selection

My Jsp page :

                <form:form id="multiCheckBox" commandName="courseDto" method="post" action="register.do">
                <c:forEach items="${courseDto.courseList}" var="course" varStatus="loop">                    
                <tr>
                  <td ><form:checkbox path="selectedCheckBox" class="course_data" value="${course.course_name}" /></td>
                  <td><c:out value='${course.id}' /></td>
                  <td><c:out value='${course.course_name}' /></td>
                  <td><form:input type="text"
                        path="course[${loop.index}].enrollment_date"
                        class="date-picker" /> 
                 </td> 
                  <td><c:out value='${course.enrollment_status}' /></td>

                </tr>
                </c:forEach>                    
              </table></div></td>
          </tr>
        </table><br>
        <input type="submit" value="Submit Data">

My Controller :

@RequestMapping(value="/register.do",method=RequestMethod.POST) public String getInputForm(HttpServletRequest httpServletRequest, @ModelAttribute("courseDto") Course courseDto) { System.out.println(courseDto.getCourse_name()+"nnn"+courseDto.getId());

}

I am getting null values when I try to submit this,Please helo me in resolving this issue. Thanks in advnace..!!!