Saving {custom} picture meta fields

I’ve at the moment added a {custom} meta area to add a media file (picture). I can efficiently add the add button to show and it really works however I am having issues saving the sector when updating the web page.

Code I am utilizing to create and show the sector:

    <?php
      $picture = get_template_directory_uri().'/photographs/picture.png';
      echo '<span class="custom_default_image" model="show:none">'.$picture.'</span>';

    if ($meta)
    {
     $picture = wp_get_attachment_image_src($meta, 'medium'); $picture = $picture[0];
    }

     echo '<enter title="image-upload-one" sort="hidden" class="custom_upload_image worth="'.$meta.'" />
     <img src="'.$picture.'" class="custom_preview_image" alt="" />
     <br />
     <enter class="custom_upload_image_button button" sort="button" worth="Select Picture" />
     <br/>
     <small>
       <a href="#" class="custom_clear_image_button">Take away Picture</a>
     </small>
     <br clear="all" />
     <span class="description">'.$area['desc'].'</span>'; ?>

The above code is from:
http://code.tutsplus.com/tutorials/reusable-custom-meta-boxes-part-3-extra-fields–wp-23821
I am unable to discover a strategy to save the enter.

I’ve created easy textual content fields/texttext space fields and might save them no downside utilizing the operate beneath however having issues saving picture fields:

  <?php if (isset($_POST['text-two']))
    {
       update_post_meta($post_id,'textTwo', esc_attr($_POST['text-two']));
    } ?>

Any assist a lot appreciated.