--- a/Services/DocumentService.php	Fri Feb 24 10:55:01 2012 +0100
+++ b/Services/DocumentService.php	Fri Feb 24 11:23:10 2012 +0100
@@ -100,7 +100,7 @@
         if(! is_a($doc,"\IRI\Bundle\WikiTagBundle\Model\DocumentInterface")) {
             $doc_rep = $this->getDoctrine()->getRepository('WikiTagBundle:Document');
             if(is_a($doc, $class)) {
-                // todo: use reflection to get the id
+                // Get the document column id, set in the config file.
                 $doc_id = $doc_rep->reflectionGetField($doc, Container()->getParameter("wiki_tag.document_id_column"));
             }
             else {
@@ -162,10 +162,9 @@
                 $query->setParameters(array("id_doc"=>$doc, "tag"=>$tag));
                 $nb_tags = $query->getSingleScalarResult();
             }
-                        
+            
             if($created || $nb_tags==0){
-                
-                $max_order = $this->getDoctrine()->getRepository('WikiTagBundle:DocumentTag')->getMaxOrder($doc);
+                $max_order = $this->getDoctrine()->getRepository('WikiTagBundle:DocumentTag')->getMaxOrder($doc_id);
                 $new_order = $max_order + 1;
                 $new_DT = new DocumentTag();
                 $new_DT->setDocument($doc);