Question on check the checkbox in a webpage with httpclient API

[ngxfer001]

Dear Experts,

Sorry to bother everyone, I have used httpclient to login my webmail
(squirrelmail) successfully, now I would like to flag unread for the
read email.

the procedure is as follows:
1) check the check box next to mail.

<td align="center" bgcolor="#ededed"><input name="msg[0]"
value="24446" type="checkbox"></td>
<td title="(e-mail address removed)" align="left"
bgcolor="#ededed"><b>"JBClub.net $B>>K\(B"</b></td>
<td align="center" bgcolor="#ededed" nowrap="nowrap"><b>10:11 pm</b></
td>
<td align="center" bgcolor="#ededed"
nowrap="nowrap"><b><small>&nbsp;</
small></b></td>
<td align="left" bgcolor="#ededed"><b><a href="read_body.php?
mailbox=INBOX&amp;passed_id=24446&amp;startMessage=1" title="Fw:
[AFL1530413*10000451] Mr. Kakuya Ide">Fw: [AFL1530413*10000451] Mr.
Kakuy...</a></b></td>
</tr>
<tr><td colspan="5" bgcolor="#dcdcdc" height="1"></td></tr>
<tr valign="top">

2) press the button to mark it unread. The button html code is as
follows.

<table border="0" width="100%" cellpadding="0"
cellspacing="0"><tr><td><form name="FormMsgsINBOX" method="post"
action="move_messages.php">
<input type="hidden" name="msg" value="">

<input type="hidden" name="mailbox" value="INBOX">
<input type="hidden" name="startMessage" value="1">

<table border="0" width="100%" cellpadding="1" cellspacing="0"><tr
bgcolor="#dcdcdc"><td align="left"><table bgcolor="#ffffff" border="0"
width="100%" cellpadding="1" cellspacing="0"><tr><td
align="left"><font color="#ababab">Previous</font>&nbsp;|&nbsp;<a
href="right_main.php?
use_mailbox_cache=0&amp;startMessage=16&amp;mailbox=INBOX" >Next</
a>&nbsp;|&nbsp;1&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=16&amp;mailbox=INBOX" >2</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=31&amp;mailbox=INBOX" >3</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=46&amp;mailbox=INBOX" >4</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=61&amp;mailbox=INBOX" >5</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=76&amp;mailbox=INBOX" >6</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=91&amp;mailbox=INBOX" >7</
a>&nbsp;...&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=1711&amp;mailbox=INBOX" >115</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=1726&amp;mailbox=INBOX" >116</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=1741&amp;mailbox=INBOX" >117</
a>&nbsp;<a href="right_main.php?
use_mailbox_cache=0&amp;startMessage=1756&amp;mailbox=INBOX" >118</
a>&nbsp;|&nbsp;<a href="right_main.php?
PG_SHOWALL=1&amp;use_mailbox_cache=0&amp;startMessage=1&amp;mailbox=INBOX"

Show All</a>&nbsp;|&nbsp;<script language="JavaScript" type="text/

javascript">
<!--
function CheckAllINBOX() {
for (var i = 0; i < document.FormMsgsINBOX.elements.length; i++) {
if(document.FormMsgsINBOX.elements.type == 'checkbox'){
document.FormMsgsINBOX.elements.checked = !
(document.FormMsgsINBOX.elements.checked);
}
}
}
//-->

</script><a href="javascript:void(0)"
onClick="CheckAllINBOX();">Toggle All</a>
</td>
<td align="right">Viewing Messages: <b>1</b> to <b>15</b> (1766
total)</td>
</tr>
</table>
</td>
</tr>
</table>
</td></tr><tr><td height="5" bgcolor="#ffffff"></td></tr><tr><td><tr>

<td align="left">
<table bgcolor="#ababab" border="0" width="100%" cellpadding="1"
cellspacing="0">
<tr><td><table bgcolor="#dcdcdc" border="0" width="100%"
cellpadding="1" cellspacing="0">
<tr><td align="left" nowrap><small>Move Selected To:&nbsp; </small></
td>
<td align="right" nowrap><small>Transform Selected Messages:&nbsp; </
small></td>
</tr>
<tr>

<td align="left" valign="middle" nowrap>
<small>&nbsp;<tt><select name="targetMailbox"><option
value="INBOX">INBOX</option>

<option value="INBOX.Drafts">INBOX.Drafts</option>
<option value="INBOX.Sent">INBOX.Sent</option>
<option value="INBOX.Trash">INBOX.Trash</option>
<option value="INBOX.Junk">INBOX.Junk</option>
</select></tt>&nbsp;<input type="SUBMIT" name="moveButton"
value="Move">
<input type="SUBMIT" name="attache" value="Forward">
</small></td>
<td align="right" nowrap="nowrap">

<input name="markRead" value="$B4{FI(B" type="submit"><input
name="markUnread" value="$BL$FI(B" type="submit"><input name="delete"
value="$B=|(B" type="submit">&nbsp;
<input name="location" value="/www.s188.xrea.com/mail/src/
right_main.php?&amp;startMessage=1&amp;mailbox=INBOX" type="hidden">
</td>


I have done the following:

PostMethod checkpost = new PostMethod(FRONT_PAGE +
"move_messages.php");
NameValuePair msg1 = new NameValuePair("msg[0]", "24446");
NameValuePair button = new NameValuePair("msg", "markUnread");
checkpost.setRequestBody(new NameValuePair[] {msg1, button});
client.executeMethod(checkpost);
System.out.println("Login form post: " +
checkpost.getStatusLine().toString());

This code doesn't seems to work, can you point me into the new
direction on how to do that?

thank you very much for helping me.

Best Regards
Ferdinand Ng