[Plugin: Contact Form 7] Wrong verification code

Hi all,
I’m having trouble with this code:

<table id="loginform">
<tr>
<td>Vaše jméno (povinný údaj):</td>
<td>[text* text-499 30/]</td>
</tr>
<tr>
<td>Váš Email (povinný údaj):</td>
<td>[email* email-582 30/]</td>
</tr>
<tr>
<td>Předmět zprávy:</td>
<td>[text your-subject 30/]</td>
</tr>
<tr>
<td valign="top">Obsah zprávy (povinný údaj):</td>
<td>[textarea* textarea-68 50x10]</td>
</tr>
<tr>
<td colspan="2" align="center"><label>[captchac captcha-969 size:s fg:#333333 bg:#D6DED4]</label> [captchar captcha-969 4/] [submit "Odeslat"]</td>
</tr>
</table>

Everytime i try to send message via contact form page, it shows a message that veryfication code is wrong. Can you help me guys?