Tabs on Facebook Pages: Complex Case, using hook_fb_tab()-Customising Code

Hi,

I have problem with customising code for Tabs on Facebook Pages: Complex Case, using hook_fb_tab(), from
http://drupal.org/node/956034

I have successfully customised part of the code that builds a form when directed to configuration section of a tab for a particular page (option FB_TAB_OP_FORM ). I have a form that simes to work because, if I do a relode of this the default option in the form is the option that was chosen before a relode. The chosen option sims to be saved in $data['config']['eg_fb_og']

Now the $data['config']['eg_fb_og'] should be set and after I return to the page tab count($data['config']) should give TRUE condition and this part of the code

 if (count($data['config'])) {
      // We have been configured, we can show a group.
      $og = node_load($data['config']['eg_fb_og']);
      og_set_group_context($og);
      drupal_set_title($og->title);
      // Show the default "river of news"
      $return['eg_fb_og'] = array(
        '#type' => 'markup',
        '#value' => views_embed_view('og_ghp_ron', 'default', $og->nid),
      );

should be run. But instead I'm directed again to configuration section. Also if I try to check and print_r($data['config']['eg_fb_og']) on screen I don't get anything on screen.

Thanks,