It wasn't possible to update orginization details

When try to find the previos organizationname to see if is necessary to update or create
a new register, the vtlib_purify change the string if have '&' and the query
		$sql = "SELECT * FROM vtiger_organizationdetails WHERE organizationname = ?";
		$result = $adb->pquery($sql, array($org_name));
Not return any results.