meta_query on a date range using an array of values

How can I do a query to return the post if the custom field array contains a date that is within the specified range?
The query below is basically what I am after but it does not work…

// the income_dates array looks like this
// a:3:{i:0;s:10:"2014-02-01";i:1;s:10:"2014-03-01";i:2;s:10:"2014-03-29";}

$today = date("Y-m-d");
$date1 = date("Y-m-d", strtotime($today . "-1 Month"));
$date2 = date("Y-m-d", strtotime($today . "+1 Month"));

$args = array(
    'post_type' => 'income',
    'meta_query' => array( 
        array(
            'key' => 'income_dates',
            'value' => $date1,
            'type'  => 'date',
            'compare' => '>'
        ),
        array(
            'key' => 'income_dates',
            'value' => $date2,
            'type'  => 'date',
            'compare' => '<'
        ),
    )
); 

I needed to get post with type event and the custom field “date” later than today, this sample of code worked perfectly for me, I hope it helps to someone in a similar situation.

            $today = date("Y-m-d");
            $today1 = date("Ymd", strtotime("$today"));
            $custom_meta = array(
                array(
                    'key' => 'data_de_inicio',
                    'value'=>$today1,
                    'compare'=>'>',
                    'type'=>'date',
                ),
            );
            $query = new WP_Query(array(
                'post_type'=>'event',
                'showposts'=>'3',
                'orderby'=>'meta_value',
                'meta_key'=>'data_de_inicio',
                'order'=>'asc',
                'meta_query'=>$custom_meta,
                )
            );