CAllPageOption::SetOptionString

static function SetOptionString($module_id, $name, $value="", $desc=false, $site="")
{
	if($site===false)
		$site = SITE_ID;
	if($site == '')
		$site = "-";

	static::$MAIN_PAGE_OPTIONS[$site][$module_id][$name] = $value;
	return true;
}