Adding a field (checkbox) to the remove form

Hi

I'm trying to add a checkbox to the remove editor form but I can't see howt thats done. I tried this for ex., but the field isn't showing:

var editor2 = new $.fn.dataTable.Editor({...}).add( {
type: "checkbox",
label: "Locations:",
name: "locations",
options: [
{ label: "Edinburgh", value: 51 },
{ label: "London", value: 76 }
]
} );