Как в 404 от DLE, вставить тег custom ?

{custom limit="5"}

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{custom template="shortstory" limit="5"}
[/aviable]

{custom template="shortstory" limit="5"}

$tpl->set ( '{info}',  $tpl->result['info'] );

if($tpl->result['info'] == "") {
   $tpl->set_block ( "'\\[info\\](.*?)\\[/info\\]'si", "" );
} else {
   $tpl->set_block ( "'\\[info\\](.*?)\\[/info\\]'si", "\\1" );
}

[info]
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{custom limit="10" template="tt"}
[/aviable]
[/info]