wp_query monthnum parameter ignored [closed]

Question

I'm dynamically building a query into a variable called $qstring and then executing it

When it looks like post_type=post&posts_per_page=4&order_by=modified&monthnum =12&year=2012&offset=8 it pulls back everything from 2012, rather than just December.

Is there something amiss with my query formatting? It is in an ajax call so nothing else should be interfering with it.

The whole function looks like this:

function load_more(){
    $offset = $_REQUEST['offset'];

    $qstring = 'post_type=post&posts_per_page=4&order_by=modified';

    if (isset($_REQUEST['cat'])){ $qstring .= '&cat='.$_REQUEST['cat'];}
    if (isset($_REQUEST['tag'])){ $qstring .= '&tag_id='.$_REQUEST['tag'];}
    if (isset($_REQUEST['month'])){ $qstring .= '&monthnum ='.$_REQUEST['month'];}
    if (isset($_REQUEST['year'])){ $qstring .= '&year='.$_REQUEST['year'];}

    $qstring .= '&offset='.$offset;
    echo '<div>';
    // echo '<p>'.$qstring.'</p>';
    $query = new WP_Query( $qstring );
    $result = null;
    while ( $query->have_posts() ) {
        $query->the_post();
        my_print_post();
    }
    echo '</div>';
    exit();
}

Answer 1

There was a space between monthnum and its equals sign.

carry on folks...