html - nested microdata properties with 3 levels -

i'm trying use micro data (using http://schema.org), have difficulties nested properties.

in short, i'm trying have product, contains review, in turn contains author. 2 first levels ok, when try add other review (of type "person"), google tells me 2 things : other missing review , product doesn't accept author properties.

it seems fail have author within review.

my code has first level :

<div itemscope itemtype="http://schema.org/product"> 

then later :

<span itemtype="http://schema.org/review" itemprop="review">     <p itemprop="reviewbody">myreview...</p>     (author :<span itemprop="author" itemscope itemtype="http://schema.org/person">         <span itemprop="name">name of auhor</span>     </span>) </span> 

can of spot mistake here ?

thanks lot !

you missed name product , didn't declare item scope review.

this need do:

<div itemscope itemtype="http://schema.org/product">    <span itemscope itemtype="http://schema.org/review" itemprop="review">        <p itemprop="reviewbody">myreview...</p>        (author :<span itemscope itemprop="author" itemtype="http://schema.org/person">                      <span itemprop="name">name of auhor</span>                 </span>)    </span>    <span itemprop="name">product name</span> </div>