This little DTML code is supposed to be generic for alla folder is the profil folder. What I want to do is a to have a next folder and previous folder in evey one. /profil/ /folder_XHJSD /folder_GIEHG /folder_OWKD /and_many_more /.... /folders_here document_html Document_html is acquired in all folders in the profil folder. I started doing something like this: <dtml-in "profil.objectValues(['Folder'])" sort=id> <dtml-var id>, </dtml-in> ... and this returns: folder_XHJSD, folder_GIEHG, folder_OWKD.... What I want to do is something like this: <dtml-call "REQUEST.set('thisid',_.string.split(URL,'/')[-2])"> <dtml-in "profil.objectValues(['Folder'])" sort=id> <dtml-if "_['id'] == _['thisid']"> <a href="<dtml-var sequence-previous>">previous</a> <a href="<dtml-var sequence-next>">next</a> </dtml-if> </dtml-in> .... but this returns Error Type: KeyError Error Value: sequence-next so it is obviuosly the wrong way of doing it. Grateful for help!