[imedia]

Посмотрите пожалуйста в return функции должен быть результат но в алерте обработчика ниже я получаю undefined Почему и что делать?

function change_bank_to_city(prop,bank_to_city_id,city_id,_check_city) {

                var bank_id=$('#bank_id').val();
                var data = {
                    url: '/admin/ajax/change-bank-to-city',
                    bank_id:bank_id,
                    prop:prop,
                    bank_to_city_id:bank_to_city_id,
                    city_id:city_id,
                };

                $.ajax({
                    url: data.url,
                    headers: {
                        'X-CSRF-TOKEN': $('meta[name="csrf-token"]').attr('content')
                    },
                    data: data,
                    method: 'post',
                    async:false,
                    error:function (error) {
                        console.dir(error);
                    },
                    success:function(response){
                    alert(response)
                        return response.bank_to_city_id;
                    }
                });
            
                
            }
            $('.check_city').on('change', function () {

                var bank_to_city_id =$(this).parent('div').find('.bank_to_city_id').val()
                var city_id =$(this).parent('div').find('.city_id').val()
                var check_city = $(this).attr('id')
                if($(this).is(':checked')){
                    var response = change_bank_to_city('add',null,city_id)
                    //поменять bank_to_city_id
                    alert(response)
                    alert(check_city)
                    alert($(this).parent('div').find('.bank_to_city_id').val())
                    $(this).parent('div').find('.bank_to_city_id').val(response.bank_to_city_id)
                }
                else{
                    change_bank_to_city('delete',bank_to_city_id,city_id,null)
                }



            });