[Zope] Iterating over meta-entries fields in Metapublisher

dear all, I am using metapublisher: how do I iterate in dtml over one field of my meta-entries in order to change that field in all entries? I tried to use the editEntry method: <dtml-in entryIds> <dtml-call "REQUEST.set('f1014038858', 'whatever')"> <dtml-call "editEntry(id=_['sequence-item'],title='',REQUEST=REQUEST,RESPONSE=RESPONSE) "> </dtml-in> and also directly the manage_editMetaEntry method which the editEntry uses. Neither of those worked as I did not manage to pass the variable to the method? Or may be I have not understood the REQUEST stuff yet? Best regards Juergen