checkbox options

I have problems with the checkbox options. I used this example https://editor.datatables.net/examples/advanced/joinArray.html to implement it. But i dedected problems two problems.
1.
in the example the editor would send a field data[0][permission-many-count]=2. where does the field come from? In my implementation this field never comes in any cases.
2.
I have a server side script in java. I'm not sure to the send data format for the checkboxes is correct. No checkboxes are check, if the should checked. I append a part of the sending json file and the part in the editor. Anyone an idea whats wrong here in my code?

Andreas

here my code for the editor

usrForm = new $.fn.dataTable.Editor( {
    table: '#usrtbl',
    ajax: '/assets/php/api/users.php?usr=2',
    display: 'bootstrap',
    template: '#tplUser',
    fields: [
       {
    label: frmInfo.u_role,
    name: 'u_role',
    data: 'role.id',
    type: 'checkbox',
    optionsPair: {
        label: 'name',
        value: 'id'
    }
      ]
}

here my jsonformat that i send to the client

{
    "content": [{
        "DT_RowId": "a63bf953-f4a4-4927-b12b-011ee6eabba3",
        "_index": 1,
        "fullName": "BENIGNI Zita",
        "lastname": "Benigni",
        "firstname": "Zita",
        "lastnamePrefix": "",
        "birthday": "1974-03-05",
        "gender": "FEMALE",
        "nationality": {
            "iso3166_1_alpha2": "AT",
            "name": "Austria"
        },
        "email": "zita.benigni@chello.at",
        "club": {
            "uuid": "c4b1db94-31fd-4d5b-b611-71175b0321a3",
            "name": "Vienna Dolphins"
        },
        "status": "APPROVED",
        "uadress": {
            "adress1": "",
            "adress2": "",
            "zip": "",
            "state": "",
            "country": {
                "iso3166_1_alpha3": "",
                "name": ""
            },
            "location": ""
        },
        "maxChildren": 0,
        "language": "DE",
        "role": {
            "4": {
                "id": 4,
                "name": "Club"
            },
            "0": {
                "id": 0,
                "name": "User"
            }
        }
    },.....

    "recordsFiltered": 31,
    "recordsTotal": 76,
    "options": {
        "u_role": [{
            "name": "User",
            "id": "0"
        }, {
            "name": "Parent",
            "id": "1"
        }, {
            "name": "Athlete",
            "id": "2"
        }, {
            "name": "Coach",
            "id": "3"
        }, {
            "name": "Club",
            "id": "4"
        }, {
            "name": "Federation",
            "id": "5"
        }, {
            "name": "Administration",
            "id": "6"
        }]