modificar los permisos en los archivos subidos en un formulario

[yomiento]

No consiguo aclararme con como poner la función chmod. Os pongo el código del formulario por si me podeis ayudar. Mil gracias

<?php require_once('../Connections/qcl803.php'); ?>
<?php require_once("../WA_DataAssist/WA_AppBuilder_PHP.php"); ?>
<?php require_once("../WA_DigitalFilePro/HelperPHP.php"); ?>
<?php
WA_DFP_SetupUploadStatusStruct("WA_UploadResult1") ;
if(($_SERVER["REQUEST_METHOD"] == "POST") && (isset($_SERVER["HTTP_REFERER"]) && strpos(urldecode($_SERVER["HTTP_REFERER"]), urldecode($_SERVER["SERVER_NAME"].$_SERVER["PHP_SELF"])) > 0) && isset($_POST)){
WA_DFP_UploadFile("WA_UploadResult1", "foto", "../fotos/nofoto.gif", "../fotos/", "[FileName]", "2", "[FileName]_[Increment]", "0", "false", "0", "0");
}
?>
<?php
chmod("../fotos/", 0755); // octal; valor correcto
?>
<?php require_once("../WA_iRite/WARichEditorPHP.php"); ?>
<?php
// WA Application Builder Insert
if (isset($_POST["Insert"])) // Trigger
{
$WA_connection = $qcl803;
$WA_table = "fundacioneuropa";
$WA_sessionName = "WADA_Insert_fundacioneuropa";
$WA_redirectURL = "fundacioneuropa_Detail.php";
$WA_keepQueryString = true;
$WA_indexField = "id";
$WA_fieldNamesStr = "titulo|subtitulo|fecha|texto|foto|pie_de_foto|doc umento|pie_de_documento";
$WA_fieldValuesStr = "".((isset($_POST["titulo"]))?$_POST["titulo"]:"") ."" . "|" . "".((isset($_POST["subtitulo"]))?$_POST["subtitulo"]:"") ."" . "|" . "".((isset($_POST["fecha"]))?$_POST["fecha"]:"") ."" . "|" . "".((isset($_POST["texto"]))?$_POST["texto"]:"") ."" . "|" . "".$WA_DFP_UploadStatus["WA_UploadResult1"]["serverFileName"] ."" . "|" . "".((isset($_POST["pie_de_foto"]))?$_POST["pie_de_foto"]:"") ."" . "|" . "".((isset($_POST["documento"]))?$_POST["documento"]:"") ."" . "|" . "".((isset($_POST["pie_de_documento"]))?$_POST["pie_de_documento"]:"") ."";
$WA_columnTypesStr = "',none,''|',none,''|',none,NULL|',none,''|',none, NULL|',none,''|',none,''|',none,''";
$WA_fieldNames = explode("|", $WA_fieldNamesStr);
$WA_fieldValues = explode("|", $WA_fieldValuesStr);
$WA_columns = explode("|", $WA_columnTypesStr);
$WA_connectionDB = $database_qcl803;
mysql_select_db($WA_connectionDB, $WA_connection);
if (!session_id()) session_start();
$insertParamsObj = WA_AB_generateInsertParams($WA_fieldNames, $WA_columns, $WA_fieldValues, -1);
$WA_Sql = "INSERT INTO `" . $WA_table . "` (" . $insertParamsObj->WA_tableValues . ") VALUES (" . $insertParamsObj->WA_dbValues . ")";
$MM_editCmd = mysql_query($WA_Sql, $WA_connection) or die(mysql_error());
$_SESSION[$WA_sessionName] = mysql_insert_id();
if ($WA_redirectURL != "") {
if ($WA_keepQueryString && $WA_redirectURL != "" && isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] !== "" && sizeof($_POST) > 0) {
$WA_redirectURL .= ((strpos($WA_redirectURL, '?') === false)?"?":"&").$_SERVER["QUERY_STRING"];
}
header("Location: ".$WA_redirectURL);
}
}
?>