hola bueno vengo con una nueva preguntita bueno e estado estudiando php y por lo que e visto en mybb los hooks son los ganchos repartidos por todo los archivos del foro que sirven para modificar alguna funcion.

mi pregunta es la siguiente:

como crear hooks o cual es el codigo basico para empezar con uno.

en la wiki de MyBB esta una lista de TODOS los hooks comunes (los del sistema)
http://wiki.mybb.com/index.php/MyBB_Plugin_Hooks

para armar un hook necesitas saber en que archivo y en que parte se reproducira tu funcion y despues armas asi por ejemplo

$plugins->add_hook("showthread_start", "elnombredemifuncion");

y la funcion se llamaria

function elnombredemifuncion()
{
	aqui el contenido de mi funcion
}

espero haya quedado entendible

creo que dste la respuesta equivocada cluster...
te lodigo porque recuerdo que el usuario quiere thanks en downloads y le dijieron que el downloads no crea hooks entonces por tanto quiere crear hooks en el para usarlos desde un plugin entonces es igual de facil...

por ejemplo para crear un simple hook es de la siguiente forma

$plugins->run_hooks("nombre_del_hook");

y tambien otro que es asi

$plugins->run_hooks("nombre_del_hook", $variable_o_array);

cuando es asi regularmente en un array tienes que llamar a tu funcion de la siguiente forma

function nombre_del_hook(&$variable_o_array)
{
}

y dentro de la funcion manejas $variable_o_array como quieras (cuando es array)!!!

muchas gracias por las respuestas como dice Edson yo agrege:
a download.php

$plugins->run_hooks("download_archive", $archive);

y en thx del plugin agrege:

$plugins->add_hook("download_archive", "thx");

y luego en el plugin thanx deje abajo la funcion:

function thx(&$archive) 
{
	global $db, $mybb, $lang ,$session, $theme, $altbg, $templates, $thx_cache;
	
	if(!$mybb->settings['thx_active'] || !empty($session->is_spider))
	{
		return false;
	}
	
	$lang->load("thx");
	
	if($b = $archive['dthx'])
	{
		$entries = build_thank($archive['did'], $b);
	}
	else 
	{
		$entries = "";
	}
	
 	if($mybb->user['uid'] != 0 && $mybb->user['uid'] != $archive['uid']) 
	{
		if(!$b)
		{
			$archive['thanks'] = "<a id=\"a{$archive['did']}\" onclick=\"javascript:return thx({$archive['did']});\" href=\"showthread.php?action=thank&did={$archive['did']}\">
			<img src=\"{$mybb->settings['bburl']}/{$theme['imgdir']}/postbit_thx.gif\" border=\"0\" alt=\"$lang->thx_main\" title=\"$lang->thx_main\" id=\"i{$archive['did']}\" /></a>";
		}
		else if($mybb->settings['thx_del'] == "1")
		{
			$archive['thanks'] = "<a id=\"a{$archive['did']}\" onclick=\"javascript:return rthx({$archive['did']});\" href=\"showthread.php?action=remove_thank&did={$archive['did']}\">
			<img src=\"{$mybb->settings['bburl']}/{$theme['imgdir']}/postbit_rthx.gif\" border=\"0\" alt=\"$lang->thx_remove\" title=\"$lang->thx_remove\" id=\"i{$archive['did']}\" /></a>";
		}
		else
		{
			$archive['thanks'] = "<!-- remove thanks disabled by administrator -->";
		}
	}
	
	$display_style = $entries ?  "" : "display:none; border:0;";
	$playout = $mybb->settings['postlayout'];
	
	if(!$mybb->settings['thx_outline'])
	{
		eval("\$archive['thxdsp_inline'] .= \"".$templates->get("thanks_postbit_inline")."\";");
									
	}
	else
	{	
		eval("\$archive['thxdsp_outline'] .= \"".$templates->get("thanks_postbit_outline")."\";");
	}
	
	if($mybb->settings['thx_count'] == "1")
	{
		if(!isset($thx_cache['postbit'][$archive['uid']]))
		{
			$archive['thank_count'] = $archive['thx'];
			$archive['thanked_count'] = $lang->sprintf($lang->thx_thanked_count, $archive['thxcount'], $archive['thxdownload']);
			eval("\$x = \"".$templates->get("thanks_postbit_count")."\";");
			$thx_cache['postbit'][$archive['uid']] = $x;
		}
		
		$archive['user_details'] .= $thx_cache['postbit'][$archive['uid']];
	}
}

pero no aparece nada bueno les dejo el thx plugin como lo modifique:

<?php
/*

Plugin Thanks 3.9.1
(c) 2008-2011 by Huji Lee, SaeedGh (SaeehGhMail@Gmail.com)
Last edit: 11-26-2011

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

*/

if(!defined("IN_MYBB"))
{
	die("Direct initialization of this file is not allowed.");
}

if(isset($GLOBALS['templatelist']))
{
	$GLOBALS['templatelist'] .= ", thanks_postbit_count";
}

$plugins->add_hook("download_archive", "thx");
$plugins->add_hook("xmlhttp", "do_action");
$plugins->add_hook("download", "direct_action");

function thx_info()
{
	return array(
		'name'			=>	'<img border="0" src="../images/Thanks.gif" align="absbottom" alt="" /> Thanks',
		'description'	=>	'Add a Thanks button to user posts.',
		'website'		=>	'http://www.mybb.com',
		'author'		=>	'Huji Lee, SaeedGh',
		'authorsite'	=>	'mailto:SaeedGhMail@Gmail.com',
		'version'		=>	'3.9.1',
		'guid'		    =>	'd82cb3ceedd7eafa8954449cd02a449f',
        'compatibility' =>	'14*,16*'
	);
}


function thx_install()
{
	global $db;
	
	$db->query("CREATE TABLE IF NOT EXISTS ".TABLE_PREFIX."thx ( 
		txid INT UNSIGNED NOT NULL AUTO_INCREMENT, 
		uid int(10) UNSIGNED NOT NULL, 
		adduid int(10) UNSIGNED NOT NULL, 
		did int(10) UNSIGNED NOT NULL, 
		time bigint(30) NOT NULL DEFAULT '0', 
		PRIMARY KEY (`txid`), 
		INDEX (`adduid`, `did`, `time`) 
		);"
	);
	
	if(!$db->field_exists("thx", "users"))
	{
		$sq[] = "ALTER TABLE ".TABLE_PREFIX."users ADD `thx` INT NOT NULL, ADD `thxcount` INT NOT NULL, ADD `thxdownload` INT NOT NULL";
	}
	elseif (!$db->field_exists("thxdownload", "users"))		
	{
		$sq[] = "ALTER TABLE ".TABLE_PREFIX."users ADD `thxdownload` INT NOT NULL";
	}
	
	if($db->field_exists("thx", "downloads"))
	{
		$sq[] = "ALTER TABLE ".TABLE_PREFIX."downloads DROP thx";
	}
	
	if(!$db->field_exists("dthx", "downloads"))
	{
		$sq[] = "ALTER TABLE ".TABLE_PREFIX."downloads ADD `dthx` INT(10) NOT NULL DEFAULT '0'";
	}
	
	if(is_array($sq))
	{
		foreach($sq as $q)
		{
			$db->query($q);
		}
	}
}


function thx_is_installed()
{
	global $db;
	if($db->field_exists('thxdownload', "users"))
	{
		return true;
	}
	return false;
}


function thx_activate()
{
	global $db;
	
	//Update from v3.8
	$thx_tbl_keys = $db->query("SHOW KEYS FROM ".TABLE_PREFIX."thx WHERE Key_name='adduid'");
	
	if(!$db->fetch_field($thx_tbl_keys, "Key_name"))
	{
		$db->query("ALTER TABLE ".TABLE_PREFIX."thx ADD INDEX (`adduid`, `did`, `time`)");
	}
	
	//Adding templates
	require MYBB_ROOT."inc/adminfunctions_templates.php";
	
	find_replace_templatesets("downloads_archives_view", '#'.preg_quote('{$archive[\'downloads\']}</span></td>').'#', '{$archive[\'downloads\']}</span></td><!-- Downloads -->{\$archive[\'thxdsp_inline\']}{$archive[\'thxdsp_outline\']}<!-- /Downloads -->');
	find_replace_templatesets("downloads_archives_view", '#'.preg_quote('{$username}').'#', '{$username}{$archive[\'thanks\']}');
		
	find_replace_templatesets("headerinclude", "#".preg_quote('{$newpmmsg}').'#',
		'<script type="text/javascript" src="jscripts/thx.js"></script>{$newpmmsg}');
	
	$templatearray = array(
		'title' => 'thanks_postbit_count',
		'template' => "<div><span class=\"smalltext\">{\$lang->thx_thank} {\$archive[\'thank_count\']}<br />
	{\$archive[\'thanked_count\']}<br /></span></div>",
		'sid' => '-1',
		);
	$db->insert_query("templates", $templatearray);

	$templatearray = array(
		'title' => 'thanks_postbit_inline',
		'template' => "<table><tr id=\"thx{\$archive[\'did\']}\" style=\"{\$display_style}\" class=\"trow2 tnx_style tnx_classic\"><td><span class=\"smalltext\">{\$lang->thx_givenby}</span></td><td class=\"trow2 tnx_style\" id=\"thx_list{\$archive[\'did\']}\">\$entries</td></tr></table>",
		'sid' => '-1',
		);	
	$db->insert_query("templates", $templatearray);
	
	$templatearray = array(
		'title' => 'thanks_postbit_outline',
		'template' => "<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\" width=\"100%\" id=\"thx{\$archive[\'did\']}\" style=\"{\$display_style};margin-top:5px;\"><tr><td>
		<table border=\"0\" cellspacing=\"{\$theme[\'borderwidth\']}\" cellpadding=\"{\$theme[\'tablespace\']}\" class=\"tborder thxdsp_outline\"><tr class=\"trow1 tnx_style\"><td valign=\"top\" width=\"1%\" nowrap=\"nowrap\"><img src=\"{\$mybb->settings[\'bburl\']}/images/rose.gif\" align=\"absmiddle\" /> &nbsp;<span class=\"smalltext\">{\$lang->thx_givenby}</span></td><td class=\"trow2 tnx_style\" id=\"thx_list{\$archive[\'did\']}\">\$entries</td></tr></table>
		</td></tr></table>",
		'sid' => '-1',
		);
	$db->insert_query("templates", $templatearray);
	
	$thx_group = array(
		"name"			=> "Thanks",
		"title"			=> "Thanks",
		"description"	=> "Displays thank you note below each post.",
		"disporder"		=> "3",
		"isdefault"		=> "1"
	);	
	$db->insert_query("settinggroups", $thx_group);
	$gid = $db->insert_id();
	
	$thx[]= array(
		"name"			=> "thx_active",
		"title"			=> "Activate/Deactivate this plugin",
		"description"	=> "Activate or deactivate plugin but no delete table",
		"optionscode" 	=> "onoff",
		"value"			=> '1',
		"disporder"		=> '1',
		"gid"			=> intval($gid),
	);
	
	$thx[] = array(
		"name"			=> "thx_count",
		"title"			=> "Show count thanks",
		"description"	=> "Show count thanks in any post",
		"optionscode" 	=> "onoff",
		"value"			=> '1',
		"disporder"		=> '2',
		"gid"			=> intval($gid),
	);
	
	$thx[] = array(
		"name"			=> "thx_del",
		"title"			=> "Users can remove their thanks",
		"description"	=> "Every one can delete his thanks",
		"optionscode" 	=> "onoff",
		"value"			=> '1',
		"disporder"		=> '3',
		"gid"			=> intval($gid),
	);
	
	$thx[] = array(
		"name"			=> "thx_hidemode",
		"title"			=> "Show date on mouse over",
		"description"	=> "Show date of thanks just when mouse is over it",
		"optionscode" 	=> "onoff",
		"value"			=> '1',
		"disporder"		=> '4',
		"gid"			=> intval($gid),
	);
	
	$thx[] = array(
		"name"			=> "thx_autolayout",
		"title"			=> "Auto detect layout",
		"description"	=> "Detect postbit layout and try to correct related HTML code! (just works if \"Separate table\" is ON)",
		"optionscode" 	=> "onoff",
		"value"			=> '1',
		"disporder"		=> '5',
		"gid"			=> intval($gid),
	);
	
	$thx[] = array(
		"name"			=> "thx_outline",
		"title"			=> "Separate table",
		"description"	=> "If you want to show thanks between of tow post (not in end of a post), switch this option on.",
		"optionscode"	=> "onoff",
		"value"			=> '1',
		"disporder"		=> '6',
		"gid"			=> intval($gid),
	);
	
	foreach($thx as $t)
	{
		$db->insert_query("settings", $t);
	}
	
	rebuild_settings();
}


function thx_deactivate()
{
	global $db;
	require '../inc/adminfunctions_templates.php';
	
	find_replace_templatesets("postbit", '#'.preg_quote('{$archive[\'thxdsp_inline\']}').'#', '', 0);
	find_replace_templatesets("postbit", '#'.preg_quote('{$archive[\'thxdsp_outline\']}').'#', '', 0);
	find_replace_templatesets("postbit", '#'.preg_quote('{$archive[\'thanks\']}').'#', '', 0);
	find_replace_templatesets("postbit_classic", '#'.preg_quote('{$archive[\'thxdsp_inline\']}').'#', '', 0);
	find_replace_templatesets("postbit_classic", '#'.preg_quote('{$archive[\'thxdsp_outline\']}').'#', '', 0);
	find_replace_templatesets("postbit_classic", '#'.preg_quote('{$archive[\'thanks\']}').'#', '', 0);
	find_replace_templatesets("headerinclude", "#".preg_quote('<script type="text/javascript" src="jscripts/thx.js"></script>').'#', '', 0);
	
	$db->delete_query("settings", "name IN ('thx_active', 'thx_count', 'thx_del', 'thx_hidemode', 'thx_autolayout', 'thx_outline')");
	$db->delete_query("settinggroups", "name='Thanks'");
	$db->delete_query("templates", "title='thanks_postbit_count'");
	$db->delete_query("templates", "title='thanks_postbit_inline'");
	$db->delete_query("templates", "title='thanks_postbit_outline'");
	
	rebuild_settings();
}


function thx_uninstall()
{
	global $db;

	/*$db->query("drop TABLE ".TABLE_PREFIX."thx");*/
	
	if($db->table_exists("thx"))
	{
		$db->drop_table("thx");
    }
	if($db->field_exists("thx", "users"))
	{
		$db->query("ALTER TABLE ".TABLE_PREFIX."users DROP thx, DROP thxcount, DROP thxdownload");
	}
	
	if($db->field_exists("dthx", "downloads"))
	{
		$db->query("ALTER TABLE ".TABLE_PREFIX."downloads DROP dthx");
	}
}


function thx(&$archive) 
{
	global $db, $mybb, $lang ,$session, $theme, $altbg, $templates, $thx_cache;
	
	if(!$mybb->settings['thx_active'] || !empty($session->is_spider))
	{
		return false;
	}
	
	$lang->load("thx");
	
	if($b = $archive['dthx'])
	{
		$entries = build_thank($archive['did'], $b);
	}
	else 
	{
		$entries = "";
	}
	
 	if($mybb->user['uid'] != 0 && $mybb->user['uid'] != $archive['uid']) 
	{
		if(!$b)
		{
			$archive['thanks'] = "<a id=\"a{$archive['did']}\" onclick=\"javascript:return thx({$archive['did']});\" href=\"showthread.php?action=thank&did={$archive['did']}\">
			<img src=\"{$mybb->settings['bburl']}/{$theme['imgdir']}/postbit_thx.gif\" border=\"0\" alt=\"$lang->thx_main\" title=\"$lang->thx_main\" id=\"i{$archive['did']}\" /></a>";
		}
		else if($mybb->settings['thx_del'] == "1")
		{
			$archive['thanks'] = "<a id=\"a{$archive['did']}\" onclick=\"javascript:return rthx({$archive['did']});\" href=\"showthread.php?action=remove_thank&did={$archive['did']}\">
			<img src=\"{$mybb->settings['bburl']}/{$theme['imgdir']}/postbit_rthx.gif\" border=\"0\" alt=\"$lang->thx_remove\" title=\"$lang->thx_remove\" id=\"i{$archive['did']}\" /></a>";
		}
		else
		{
			$archive['thanks'] = "<!-- remove thanks disabled by administrator -->";
		}
	}
	
	$display_style = $entries ?  "" : "display:none; border:0;";
	$playout = $mybb->settings['postlayout'];
	
	if(!$mybb->settings['thx_outline'])
	{
		eval("\$archive['thxdsp_inline'] .= \"".$templates->get("thanks_postbit_inline")."\";");
									
	}
	else
	{	
		eval("\$archive['thxdsp_outline'] .= \"".$templates->get("thanks_postbit_outline")."\";");
	}
	
	if($mybb->settings['thx_count'] == "1")
	{
		if(!isset($thx_cache['postbit'][$archive['uid']]))
		{
			$archive['thank_count'] = $archive['thx'];
			$archive['thanked_count'] = $lang->sprintf($lang->thx_thanked_count, $archive['thxcount'], $archive['thxdownload']);
			eval("\$x = \"".$templates->get("thanks_postbit_count")."\";");
			$thx_cache['postbit'][$archive['uid']] = $x;
		}
		
		$archive['user_details'] .= $thx_cache['postbit'][$archive['uid']];
	}
}

function do_action()
{
	global $mybb, $lang, $theme;
	
	if(($mybb->input['action'] != "thankyou"  &&  $mybb->input['action'] != "remove_thankyou") || $mybb->request_method != "post")
	{
		return false;
	}
		
	if(file_exists($lang->path."/".$lang->language."/thx.lang.php"))	
	{
		$lang->load("thx");
	}
	else 
	{
		$l = $lang->language;
		$lang->set_language();
		$lang->load("thx");
		$lang->set_language($l);
	}
	
	$did = intval($mybb->input['did']);
	
	if ($mybb->input['action'] == "thankyou" )
	{
		do_thank($did);
	}
	else if($mybb->settings['thx_del'] == "1")
	{
		del_thank($did);
	}
	
	$nonead = 0;
	$list = build_thank($did, $nonead);
	header('Content-Type: text/xml');
	$output = "<thankyou>
				<list><![CDATA[$list]]></list>
				<display>".($list ? "1" : "0")."</display>
				<image>{$mybb->settings['bburl']}/{$theme['imgdir']}/";
	
	if($mybb->input['action'] == "thankyou")
	{
		$output .= "postbit_rthx.gif";
	}
	else
	{
		$output .= "postbit_thx.gif";
	}
	
	$output .= "</image>
			  <del>{$mybb->settings['thx_del']}</del>	
			 </thankyou>";
	echo $output;
}

function direct_action()
{
	global $mybb, $lang;
	
	if($mybb->input['action'] != "thank"  &&  $mybb->input['action'] != "remove_thank")
	{
		return false;
	}
		
	if(file_exists($lang->path."/".$lang->language."/thx.lang.php"))	
	{
		$lang->load("thx");
	}
	else 
	{
		$l = $lang->language;
		$lang->set_language();
		$lang->load("thx");
		$lang->set_language($l);
	}
	$did=intval($mybb->input['did']);
	
	if($mybb->input['action'] == "thank" )
	{
		do_thank($did);
	}
	else if($mybb->settings['thx_del'] == "1")
	{
		del_thank($did);
	}
	redirect($_SERVER['HTTP_REFERER']);
}

function build_thank($did, &$is_thx)
{
	global $db, $mybb, $lang, $thx_cache;
	$is_thx = 0;
	
	$did = intval($did);
	
	if(file_exists($lang->path."/".$lang->language."/thx.lang.php"))
	{
		$lang->load("thx");
	}
	else
	{
		$l=$lang->language;
		$lang->set_language();
		$lang->load("thx");
		$lang->set_language($l);
	}
	$dir = $lang->thx_dir;
	
	$query=$db->query("SELECT th.txid, th.uid, th.adduid, th.did, th.time, u.username, u.usergroup, u.displaygroup 
		FROM ".TABLE_PREFIX."thx th 
		JOIN ".TABLE_PREFIX."users u 
		ON th.adduid=u.uid 
		WHERE th.did='$did' 
		ORDER BY th.time ASC" 
	);

	while($record = $db->fetch_array($query))
	{
		if($record['adduid'] == $mybb->user['uid'])
		{
			$is_thx++;
		}
		$date = my_date($mybb->settings['dateformat'].' '.$mybb->settings['timeformat'], $record['time']);
		if(!isset($thx_cache['showname'][$record['username']]))
		{
			$url = get_profile_link($record['adduid']);
			$name = format_name($record['username'], $record['usergroup'], $record['displaygroup']);
			$thx_cache['showname'][$record['username']] = "<a href=\"$url\" dir=\"$dir\">$name</a>";
		}
		
		if($mybb->settings['thx_hidemode'])
		{
			$entries .= $r1comma." <span title=\"".$date."\">".$thx_cache['showname'][$record['username']]."</span>";
		}
		else
		{
			$entries .= $r1comma.$thx_cache['showname'][$record['username']]." <span class=\"smalltext\">(".$date.")</span>";
		}
		
		$r1comma = $lang->thx_comma;
	}
	
	return $entries;
}

function do_thank($did)
{
	global $db, $mybb;
	
	$did = intval($did);
	
	$check_query = $db->simple_select("thx", "count(*) as c" ,"adduid='{$mybb->user['uid']}' AND did='$did'", array("limit"=>"1"));
			
	$tmp=$db->fetch_array($check_query);
	if($tmp['c'] != 0)
	{
		return false;
	}
		
	$check_query = $db->simple_select("downloads", "uid", "did='$did'", array("limit"=>1));
	if($db->num_rows($check_query) == 1)
	{
		
		$tmp=$db->fetch_array($check_query);
		
		if($tmp['uid'] == $mybb->user['uid'])
		{
			return false;
		}		
			
		$database = array (
			"uid" =>$tmp['uid'],
			"adduid" => $mybb->user['uid'],
			"did" => $did,
			"time" => time()
		);
		
		unset($tmp);
		
		$sq = array (
			"UPDATE ".TABLE_PREFIX."users SET thx=thx+1 WHERE uid='{$mybb->user['uid']}' LIMIT 1",
			"UPDATE ".TABLE_PREFIX."users SET thxcount=thxcount+1, thxdownload=CASE( SELECT COUNT(*) FROM ".TABLE_PREFIX."thx WHERE did='{$did}' LIMIT 1) WHEN 0 THEN thxdownload+1 ELSE thxdownload END WHERE uid='{$database['uid']}' LIMIT 1",
			"UPDATE ".TABLE_PREFIX."downloads SET dthx=dthx+1 WHERE did='{$did}' LIMIT 1"
		);
				  
		foreach($sq as $q)
		{
			$db->query($q);
		}
		$db->insert_query("thx", $database);
	}	
}

function del_thank($did)
{
	global $mybb, $db;
	
	$did = intval($did);
	if($mybb->settings['thx_del'] != "1")
	{
		return false;
	}

	$check_query = $db->simple_select("thx", "`uid`, `txid`" ,"adduid='{$mybb->user['uid']}' AND did='$did'", array("limit"=>"1"));		
	
	if($db->num_rows($check_query))
	{
		$data = $db->fetch_array($check_query);
		$uid = intval($data['uid']);
		$thxid = intval($data['txid']);
		unset($data);
		
		$sq = array (
			"UPDATE ".TABLE_PREFIX."users SET thx=thx-1 WHERE uid='{$mybb->user['uid']}' LIMIT 1",
			"UPDATE ".TABLE_PREFIX."users SET thxcount=thxcount-1, thxdownload=CASE(SELECT COUNT(*) FROM ".TABLE_PREFIX."thx WHERE did='{$did}' LIMIT 1) WHEN 0 THEN thxdownload-1 ELSE thxdownload END WHERE uid='{$uid}' LIMIT 1",
			"UPDATE ".TABLE_PREFIX."downloads SET dthx=dthx-1 WHERE did='{$did}' LIMIT 1"
		);
		
		$db->delete_query("thx", "txid='{$thxid}'", "1");
		
		foreach($sq as $q)
		{
			$db->query($q);
		}
	}
}



?>

porque tu problema es este...

$plugins->run_hooks("download_archive", $archive); 

el archive para empezar existe en downloads?? porque ay lo que estas haciendo es tomar una variable ($archive) del downloads para poder usarla en la funcion...

Puedes poner el codigo donde corres el hook en el download?