Datatable responsive not working after ajax call

Hi, i have a datatable but when load data with ajax the responsive doesn´t work.

Here is my code:

HTML:

Javascript:

$.ajax({
type: "POST",
dataType: "json",
url: "Monedas.asmx/GetMonedasListado",
success: function (data) {
var datatableVariable = $('#dataTables-monedas').DataTable({
responsive: true,
bPaginate: true,
bFilter: true,
bInfo: true,
data: data,
columns: [
{ 'data': 'Codigo' },
{ 'data': 'Nombre' },
{ 'data': 'Simbolo' },
{ 'data': 'OperadoAMonedaNacional' },
{ 'data': 'CodigoBancoCentral' }
],
});
}
});

Thanks a lot!
Gonzalo