TOPIC:

$this->execPieceByName('ff_InitLib');
$db =& JFactory::getDBO();

$result = null;
$query = "SELECT id
FROM #__facileforms_records
WHERE id = (SELECT MAX(id) FROM #__facileforms_records)";
$db->setQuery($query);
$result = $db->loadObject()+1;

foreach($result as $a){
ff_setValue('recordid', $a);
}

<?php

define('_JEXEC', 1);
if (file_exists(__DIR__ . '/defines.php'))
{
    include_once _DIR_ . '/defines.php';
}
if (!defined('_JDEFINES'))
{
    define('JPATH_BASE', __DIR__);
    require_once JPATH_BASE . '/includes/defines.php';
}
require_once JPATH_BASE . '/includes/framework.php';


$db = JFactory::getDBO(); 

//$code=$_POST['code']; // the value posted from the AJAX request above


$db = JFactory::getDBO();

$db->setQuery("SELECT id
FROM #__facileforms_records
WHERE id = (SELECT MAX(id) FROM #__facileforms_records)");

$recordid =$db->loadResult()+1;


	echo ($recordid );


?>

function ff_mirkoExmaple111_init()
{
setInterval('test()',500):
} // ff_mirkoExmaple111_init


function test (){


 jQuery.ajax({
                type: "POST",
                
                url: "<?php return JURI::root(true ); ?>/recordID.php",
                data: test,    
                success: function(data) {
ff_getElementByName('hiddenElement').value=data;

}

});

}