node_mass_update will not update field Cannot get node_mass_update(); to update Votes field. $node_ids is an array of node ids and $votes is a number.

    $updates = array('field_votes' =&gt; $votes);

    node_mass_update($node_ids,$updates);


My module fires and it tells me that nodes are being updated and gives me a progress bar, but the fields in the nodes are not updated.
I've never used (or even seen) that function before, but following the trail down to _node_mass_update_helper(), I think you need to use a format like this:

$updates = array('field_votes' =&gt; array(0 =&gt; array('value' =&gt; $votes)));


That array format is the standard way to update CCK fields in Drupal 6, and since the helper function does this:

foreach ($updates as $name =&gt; $value) {
  $node-&gt;$name = $value;
}


immediately before calling node_save(), I think that's what the problem is.