Ran into a bit of a problem

[Reeve of shinra]

I'm updating a small custom hack from 3.0 to 3.5 and I seem to be having some problems with a form I'm inserting into the postbit template.

When I hit submit, the value entered into the text box should be updating two fields in the db -- the problem is its not.

<if condition="is_member_of($bbuserinfo, 5, 6, 7)">
<div>
<form action="./modcp/gilupdate.php" method="post">
<input type="hidden" name="action" value="private204">
<input type="hidden" name="postid" value="$post[postid]">
<input type="hidden" name="userid" value="$post[userid]">
<input type="text" name="amount" size="3">&nbsp;
<input type="image" src="images/coin.gif" border="0" name="submit" alt="Give Gil" onClick="javascript:alert('Gil Paid!');">
</form>
<br />
<br />
		
</if>

I tried using the following script to see it that was the problem but it seems to work fine when I call it directly. Its only when I try to call it from the postbit that there seems to be an issue

PHP Code:


// ##### Set us up an enviroment #####
error_reporting(E_ALL & ~E_NOTICE);
require_once('./global.php');


// ##### Lets set up some user defined variables #####
$fieldx="field5";
$postx="gilpaid"; 

//### Hard Constants for Testing #####
$userid="7";
$postid="88";
$gilstr="93";

//##### Start Doing Stuff ##### 
//if ($_POST['action']=="private204") {

$vbulletin->db->query_write("UPDATE userfield SET $fieldx  = '$gilstr' WHERE userid = '$userid'");
$vbulletin->db->query_write("UPDATE post      SET $postx = '$gilstr' WHERE postid = '$postid'");

//}

?> 


Any thoughts about where I'm going wrong? I'm sure it must be something simple.

Bumping this with a pretty please!