Mandatory checklist rule on Syclo Service Manager 4.1

Hi All,

I am working on Surveys checklist in Service Manager 4.1 application.

We have a mandatory checklist , unless all the answers of the mandatory checklist are correct the SO cannot be started .

The level of checklist attached in the main object is like -

Main Object

   Surveys Taken (Collection)

        Surveys ( collection)

            Sections (Collection)

               Questions (Collection)

                  Answers (Collection)

                     AnswerItem (Collection)

Now I need to navigate to Answer Item to check whether the property Selected = True .

I have tried to create but that did not worked.

Has anyone done similar development or anyone who has worked on any rule which navigates to many levels of collection ?

Please suggest.

Thanks

Neha