Confirm password on non vb pages

[Dr.CustUmz]

so i tried passing that into the POST with no success

ext.php:

<?php

// ####################### SET PHP ENVIRONMENT ###########################
error_reporting(E_ALL & ~E_NOTICE);

// #################### DEFINE IMPORTANT CONSTANTS #######################
define('NO_REGISTER_GLOBALS', 1);
define('THIS_SCRIPT', 'ext'); // change this depending on your filename

// ################### PRE-CACHE TEMPLATES AND DATA ######################
// get special phrase groups
$phrasegroups = array(

);

// get special data templates from the datastore
$specialtemplates = array(
    
);

// pre-cache templates used by all actions
$globaltemplates = array(
    'ext',
);

// pre-cache templates used by specific actions
$actiontemplates = array(

);

// ######################### REQUIRE BACK-END ############################
require_once('./global.php');
// #######################################################################
// ######################## START MAIN SCRIPT ############################
// #######################################################################

$navbits = array();
$navbits[$parent] = 'Ext Page';

$navbits = construct_navbits($navbits);
eval('$navbar = "' . fetch_template('navbar') . '";');
eval('print_output("' . fetch_template('ext') . '");');


if ($_POST['do'] == 'confirmpassword')
{
	if (md5(md5($password).$vbulletin->userinfo['salt']) == $vbulletin->userinfo['password'])
	{
	   exec_header_redirect('yes.php');
	}
	else
	{
	   exec_header_redirect('no.php');
	}
}
?>

ext template (is same as OP)