Why I got error when I use checkout with non-encrypted button?

[Anonymous_User]

Why I got error when I use checkout with non-encrypted button?

This code has got the problem

<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="Email">
<input type="hidden" name="lc" value="AL">
<input type="hidden" name="item_name" value="&#1583;&#1601;&#1593; &#1601;&#1575;&#1578;&#1608;&#1585;&#1577; &#1575;&#1604;&#1575;&#1606;&#1578;&#1585;&#1606;&#1578; - &#1578;&#1610; &#1583;&#1575;&#1578;&#1575;">
<input type="hidden" name="button_subtype" value="services">
<input type="hidden" name="no_note" value="1">
<input type="hidden" name="no_shipping" value="1">
<input type="hidden" name="rm" value="1">
<input type="hidden" name="return" value="http://www.flousy.net/store/TE-Data/buy/successful.php">
<input type="hidden" name="cancel_return" value="http://flousy.net/store">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="tax_rate" value="5.000">
<input type="hidden" name="bn" value="PP-BuyNowBF:btn_buynowCC_LG.gif:NonHosted">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_buynowCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/ar_EG/i/scr/pixel.gif" width="1" height="1">
</form>

Thanks.

[Anonymous_User]

Not sure what you're trying to do the "item_name" variable value ??