Thank you for your quick response, but all fields are to 0! But it does not work!
$additional_image_fields['image_direktlink'] = array($lang['image_direktlink'], "text", 0);
$additional_image_fields['image_demo'] = array($lang['image_demo'], "text", 0);
$additional_image_fields['image_patch'] = array($lang['image_patch'], "text", 0);
$additional_image_fields['image_mirror'] = array($lang['image_mirror'], "text", 0);
$additional_image_fields['image_hersteller'] = array($lang['image_hersteller'], "text", 0);
$additional_image_fields['image_install'] = array($lang['image_install'], "text", 0);
$additional_image_fields['image_pdf'] = array($lang['image_pdf'], "text", 0);
$additional_image_fields['image_tut'] = array($lang['image_tut'], "textarea", 0);
$additional_image_fields['image_version'] = array($lang['image_version'], "text", 0);
$additional_image_fields['image_versionb'] = array($lang['image_versionb'], "text", 0);