<textarea><? echo ...?><textarea> problem?

Hello

i use the latest FCKeditor
i use this
<script type="text/javascript">
<!--
window.onload = function()
{
var oFCKeditor = new FCKeditor('arrHTMLtempl[werbetext]') ;
oFCKeditor.ReplaceTextarea() ;
}
//-->
</script>

and

<textarea id="arrHTMLtempl[werbetext]" name="arrHTMLtempl[werbetext]" cols="94" rows="8" wrap="PHYSICAL"  class="input_text"><?php echo $arrHTMLvalues[werbetext]; ?></textarea></td>

if i use the SOURCE option on FCK-editor the comes the error
"this name couldn't have this character '?'

if i use the FCKeditor without



<textarea id="arrHTMLtempl[werbetext]" name="arrHTMLtempl[werbetext]" cols="94" rows="8" wrap="PHYSICAL" class="input_text>

without php


</textarea></td>


the runs fine

Please could any help?

Best regards

Achim