Problem with the names of plug-in menu items

[gushin]

Hello! Sorry for my bad English. I make the vbulletin plugin, and have this problem:
in install code I'm create XML file cpnav_myplugin.xml, containing this code:

<?xml version="1.0" encoding="ISO-8859-1"?>
<navgroups product="my_product">
   <navgroup phrase="my_product_settings" hr="true" permissions="canadminsettings" displayorder="1">
      <navoption displayorder="10">
         <phrase>my_product_edit_text</phrase>
         <link>my_product.php?action=edit_text</link>
      </navoption>
      <navoption displayorder="20">
         <phrase>my_product_edit_emails</phrase>
         <link>my_product.php?action=edit_email</link>
      </navoption>
   </navgroup>
</navgroups>

this xml assumes that the phrases "my_product_settings", "my_product_edit_text" et al. is defined. I'm added the following xml code of the plugin this part:

<phrases>
  <phrasetype name="my_product" fieldname="my_product_phrases">
    <phrase name="my_product_settings"><![CDATA[MP settings]]></phrase>
    <phrase name="my_product_edit_text"><![CDATA[Edit mail text]]></phrase>
    <phrase name="my_product__edit_emails"><![CDATA[Edit emails]]></phrase>
  </phrasetype>
</phrases>

I assumed that the new menu item will appear in the admin interface. But I was saw the following:


In this regard, I want to ask: where is I did mistake?