<form action=baseportal.pl?htx=$htx method=post enctype=multipart/form-data>
<select name="Wert=">
<loop>
<option value=$test1>$test2</option>
</loop>
</select>

if ($Wert)
{
out "<select name='Wert2='>";
get "Feld1==$Wert";
 
while (get_next("test"))
{
out "<option value=$test1>$test2</option>"; 

out "</select>";
}
</perl> 
</form>