Pager doesn't work

I've create this simple finder:

array(
'finder_id' => '10',
'base' => 'node',
'title' => 'Finder 10',
'description' => '',
'path' => 'finder/10',
'block' => '0',
'settings' => array(
'form_on_page' => 1,
'form' => array(
'prefix' => array(
'value' => '',
'format' => 'filtered_html',
),
'suffix' => array(
'value' => '',
'format' => 'filtered_html',
),
'button_text' => 'Find',
'go_text' => 'Go',
),
'advanced' => array(
'no_results' => array(
'no_results' => 'There are no results to display',
),
'filter' => 0,
'validate_empty' => 0,
'submission' => 1,
'ajax' => 0,
'ajax_effect' => 'none',
'ajax_remote' => 0,
'element_combination' => '0',
'pager' => '1',
'goto' => '',
'hide_args' => 0,
'arg_sep' => ',',
'empty_symbol' => '',
'show_links' => 1,
'show_admin_links' => 1,
'cache_finder_find' => '0',
),
),
'elements' => array(
'0' => array(
'finder_element_id' => '25',
'finder_id' => '10',
'element' => 'text',
'title' => 'Finder element 25',
'weight' => '0',
'settings' => array(
'form' => array(
'description' => '',
'prefix' => array(
'value' => '',
'format' => 'filtered_html',
),
'suffix' => array(
'value' => '',
'format' => 'filtered_html',
),
'default_value' => '',
'required' => 0,
'field_prefix' => '',
'field_suffix' => '',
'maxlength' => '',
'minlength' => '',
'size' => '',
'rows' => '0',
),
'choices' => array(
'field' => array(
'node.title' => 'node.title',
),
'node_types' => array(
'article' => 'article',
),
'published' => 1,
),
'advanced' => array(
'delimit' => '',
'field_combination' => '0',
'value_combination' => '0',
'nesting_order' => '0',
'match' => 'c',
),
),
'element_handler' => array(
'#title' => 'Text',
'#module' => 'finder_text',
),
'#_finder_object' => '1',
),
),
'elements_index' => array(
'25' => 0,
),
'base_handler' => array(
'#title' => 'Node finder',
'#module' => 'finder_node',
),
'admin_links' => array(
'finder/10' => 'View \"Path\"',
'admin/structure/finder/10/edit' => 'Edit',
),
'links' => array(),
'#_finder_object' => '1',
)

I've set pager to 1 and it doesn't work. Any idea?

Thanks.