hook_simplenews_scheduler_edition_node_alter does not work as expected
function hook_simplenews_scheduler_edition_node_alter(&amp;$edition_node, $scheduler_node) { 

    $my_arg = '-1day';
    $edition_node-&gt;body['und'][0]['value'] = views_embed_view('tracker03', 'page', $my_arg);    
    return $edition_node;

}


This does the trick.