How to create custom Quiz result Handler views in table quiz_node_result ?

I create new DB column called "dataquiz" in Quiz_node_results database because i want store the answer question in the table i add new info entity in QuizResultMetadataController and add the views field handler in quiz_result_view.inc but nothing show up on "Quiz result" views ??

Meanwhile time_left is deprecated and no use in the module anymore but it show up in views handler quiz result although i found no single code of time_left in views handler but in QuizResultMetadataController only ?? what i missing ?

thanks