How to 'if count =='

page_header:
    -
        text: 'CFA Day!'
        image:
                name: CFA_Day_2_2012.jpg
                type: image/jpeg
                size: 654080

{% for items in header.page_header %}
{% if item.image.count == 1 %}
do something
{% elseif item.image.count > 1 %}
something else
{% endif %}
{% endfor %}