Add a check box in a search help in Web dynpro abap

Hi Expert,

I have created one field in a Web DynPro view and value has been bind to a field of context node in that view. This view context node is actually created in component controller , from where it has been bind to the view. In component controller the context node field has been attached with a custom search help created in SE11. I want to make one field in the search help as check box. Please help me how can I do it.