Multiple Images

I’m trying to figure out how to upload multiple images with this pluggin. what am i missing? See the sight

if( class_exists( 'WidgetImageField' ) )
add_action( 'widgets_init', create_function( '', "register_widget( 'image_rotator' );" ) );

class ITI_Widget_Image_OTM extends WP_Widget
{
var $image_field = 'image'; // the image field ID

function __construct()
{
$widget_ops = array(
'classname' => 'image_rotator',
'description' => __( "Image Rotator")
);
parent::__construct( 'image_rotator', __('Image Rotator'), $widget_ops );
}

function form( $instance )
{
$image_id = esc_attr( isset( $instance[$this->image_field] ) ? $instance[$this->image_field] : 0 );

$image_id2 = esc_attr( isset( $instance[$this->image_field] ) ? $instance[$this->image_field] : 0 );

$image = new WidgetImageField( $this, $image_id );
$image2 = new WidgetImageField( $this, $image_id2 );
?>
<h3>Image One:</h3>
<div>
<label><?php _e( 'Image:' ); ?></label>
<?php echo $image->get_widget_field(); ?>
</div>
<h3>Image Two:</h3>
<div>
<label><?php _e( 'Image:' ); ?></label>
<?php echo $image2->get_widget_field(); ?>
</div>
<?php
}

function widget( $args, $instance )
{
extract($args);

$image_id = $instance[$this->image_field];

$image_id2 = $instance[$this->image_field];

$image = new WidgetImageField( $this, $image_id );
$image2 = new WidgetImageField( $this, $image_id2 );

echo $before_widget;

?>
<?php if( !empty( $image ) ) : ?>
<img src="<?php echo $image->get_image_src( 'thumbnail' ); ?>" width="<?php echo $image->get_image_width( 'thumbnail' ); ?>" height="<?php echo $image->get_image_height( 'thumbnail' ); ?>" />
<?php endif; ?>
<?php if( !empty( $image2 ) ) : ?>
<img src="<?php echo $image2->get_image_src( 'thumbnail' ); ?>" width="<?php echo $image2->get_image_width( 'thumbnail' ); ?>" height="<?php echo $image2->get_image_height( 'thumbnail' ); ?>" />
<?php endif; ?>
<?php

echo $after_widget;
}

function update( $new_instance, $old_instance )
{
$instance = $old_instance;

$instance[$this->image_field] = intval( strip_tags( $new_instance[$this->image_field] ) );
$instance[$this->image_field] = intval( strip_tags( $new_instance[$this->image_field] ) );

return $instance;
}
}

add_action('widgets_init', create_function('', 'return register_widget("ITI_Widget_Image_OTM");'));

?>