Forwarded variables not seen in wml

Hi!

I am developping a wml site, where for example people can register themselves.
On index.php, there is a non_php part, where I get 3 parameters: name, id and passwd.
I send them with
<do type="accept" label="Mehet">
<go href="reg.php" method="get">
<postfield name="name" value="$name"/>
<postfield name="usr_id2" value="$usr_id2"/>
<postfield name="pwd1" value="$pwd1"/>
<postfield name="pwd2" value="$pwd2"/>
</go>
</do>

to reg.php#card1
If I check the parameters with echo, in php, it seems to work,
but if i get more details (as mobile no, email addr, ...| in a wml input)
and send them forward to reg.php #card2, the parameters from index.php are not recognised.
How can be this properly made?
thx
a