Problem outputting blocks from blog app

Hi there,

I'm trying to filter blog entries onto my front page by a select element, but they're just not appearing at all.

No errors being thrown in debug mode. Blog app is the latest version.

Each block has a select element which allows you to choose a month you'd like to output to. I'm showing the 'oct' example here, and in the blog entry, one of the blocks has 'October' selected, so it should in theory appear.

Is there something wrong with the way I'm filtering, or am I trying to make Perch do something it can't?

Thanks.

Page Code:

    <?php perch_blog_custom(array(
      'filter' => 'month-selector',
      'match' => 'eq',
      'value' => 'oct',
      'sort' => 'postDateTime',
      'sort-order' => 'ASC',
      'count' => 1,
      'template'=>'blog/timeline_post.html'
    )); ?>

Template code:

    <perch:blocks>

    <perch:block type="bl-writing" label="Writing">
      <div class="tl-entry">
        <a href="<perch:blog id="writing" type="textarea" editor="redactor" markdown="false" html="true" size="autowidth" label="Your Content" order="1"/>" data-rel="lightcase">
        <perch:blog id="excerpt" type="textarea" editor="redactor" markdown="false" html="true" size="m" words="30" label="Excerpt for the Timeline (max 30 words)" order="2"/>
        </a>
        <perch:blog id="month-selector" type="select" label="Timeline Month" options="Not Shown|noshow, February|feb, March|mar, April|apr, May|may, June|jun, July|jul, August|aug, September|sep, October|oct, November|nov" allowempty="false" help="If you'd like your entry to be shown in the timeline, select a month for it to appear." order="3"/>
      </div>
    </perch:block>

    <perch:block type="bl-social" label="Social Media">
      <div class="tl-entry">
        <perch:blog id="social-embed" type="text" label="Embed code for Twitter or Instagram goes here" order="1"/>
        <perch:blog id="month-selector" type="select" label="Timeline Month" options="Not Shown|noshow, February|feb, March|mar, April|apr, May|may, June|jun, July|jul, August|aug, September|sep, October|oct, November|nov" allowempty="false" help="If you'd like your entry to be shown in the timeline, select a month for it to appear. " order="3"/>
      </div>
    </perch:block>

  </perch:blocks>

Diagnostic report:

HEALTH CHECK

Perch is up to date
PHP 5.6.6 is up to date
MySQL 5.5.43-0ubuntu0.14.04.1-log is up to date
Image processing available
SUMMARY INFORMATION

Perch: 2.8.6, PHP: 5.6.6, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 3c688b6bbc30d36af3ac34fdd4b7b5b787fe5555 $, with PDO
Server OS: Linux, fpm-fcgi
Installed apps: content (2.8.6), assets (2.8.6), categories (2.8.6), perch_blog (4.6), perch_forms (1.8.3), perch_backup (1.2), perch_twitter (3.5.1)
App runtimes: <?php $apps_list = array( 'content', 'categories', 'perch_twitter', 'perch_forms', 'perch_blog' );
PERCH_LOGINPATH: /perch
PERCH_PATH: /srv/users/serverpilot/apps/stagingwalesinvenice/public/perch
PERCH_CORE: /srv/users/serverpilot/apps/stagingwalesinvenice/public/perch/core
PERCH_RESFILEPATH: /srv/users/serverpilot/apps/stagingwalesinvenice/public/perch/resources
Image manipulation: GD
PHP limits: Max upload 128M, Max POST 128M, Memory: 128M, Total max file upload: 128M
Resource folder writeable: Yes
HTTP_HOST: staging.experiencewalesinvenice.org
DOCUMENT_ROOT: /srv/users/serverpilot/apps/stagingwalesinvenice/public
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php