I did a component by using 3.X, and then after few time i want to add another filter
on the view.html.php i add this code

$modelEstat_id = CkJModel::getInstance('estat', 'CsicprojectsModel');
$filters->jdomOptions = array(
'list' => $modelEstat_id->getItems()
);

if i do a print_r($filters);
i obtain code, so i am getting the values
then i add in the default.xml of the view:

<fields name="request">

<fieldset name="request" addfieldpath="/administrator/components/com_component/models/fields">

....

<field name="filter_estat_id"
type="modal_estatitem"
label="CSICPROJECTS_JSEARCH_FILTER_ESTAT"
required="false"
default=""
description="CSICPROJECTS_JSEARCH_SELECT_ESTAT_ITEM"/>
</fieldset>

then in the default.php
i do
<div class="pull-left">
<?php echo $this->filters->input;?>
</div>

but i get nothing
it is empty

do you know where i should look about ?

thanks in advance