Cannot Hidden Field

rajapulau

hi, why i cannot hidden my field table? i was use like sample on datatable hidden field. but unlucky its not working..
this my code:

oTable = $('#datatable_col_reorder').dataTable({
"sDom": "<'dt-toolbar'<'col-xs-12 col-sm-6'f><'col-sm-6 col-xs-6 hidden-xs'C>r>"+
"t"+
"<'dt-toolbar-footer'<'col-sm-6 col-xs-12 hidden-xs'i><'col-sm-6 col-xs-12'p>>",
"autoWidth" : true,
"scrollX": true ,
"aoColumnDefs": { "bVisible": false, "aTargets": [1]},
});