validation problem

[eluser]alberta[/eluser]
sorry, i had put wrong view page..

Code:

{states}
<table class="{class}">
&lt;?php echo $this->validation->error_string; ?&gt;
&lt;form name="editplan" action="{site_url}index.php/projects/plan_edited" method="post"  &gt;
<tbody>
    <th colspan="2">{id} - {definition}</th>



<tr>
   <td align="right">* Commit:&lt;?php echo $this->validation->commit_error; ?&gt;</td>
  
    <td >
    &lt;textarea class="text"  cols="48" name="commit" style="height: 100px;" value="&lt;?php  $this-&gt;validation->commit?&gt;" > &lt;/textarea&gt;&lt;br />
    
    </td>
    
</tr>
   <td align="right">&nbsp;</td>
    <td >
   &lt;input value="Commit"  type="button"&gt;
   </td>
</tbody>
&lt;/form&gt;

</table>
{/states}

i've also used form_validation, but still not showing error message