<login
    <?php 
if ($this->error == null) {
    ?>
    success="true"
    error=""
<?php 
} else {
    ?>
    success="false"
    error="<?php 
    if ($this->error != null) {
        print_r(Vbf_Guard::guardAnyXml($this->error->getMessage()));
    }
    ?>
"
<?php 
}
?>
    ></login>