{
    "fields" : [
        {
            "en" : "birthDate",
            "status" : "enable",
            "index" : 10
        },{
            "en" : "email",
            "status" : "enable",
            "index" : 4
        },{
            "en" : "inviterCode",
            "status" : "enable",
            "index" : 2
        }
    ]
}

var newData = [
    {
        "en" : "birthDate",
        "status" : "disable",
    },{
        "en" : "email",
        "status" : "disable",
    }
];

collection.update(
    {'fields.en': 'birthDate'},
    {$set:{'fields.$.status': 'disable'}},
    {w:1, multi: true},
    function(error, count){

    }
);