Here is the code of register.tpl file. The variable is called and this $action variable called the account/login.php file how to I can change the link of $action variable.
<form action="<?php echo $action; ?>" method="post" enctype="multipart/form-data">
<h2><?php echo $text_your_details; ?></h2>
<div class="content">
<table class="form">
<tr>
<td><span class="required">*</span> <?php echo $entry_firstname; ?></td>
<td><input type="text" name="firstname" value="<?php echo $firstname; ?>" />
<?php if ($error_firstname) { ?>
<span class="error"><?php echo $error_firstname; ?></span>
<?php } ?></td>
</tr>
<tr>
<td><span class="required">*</span> <?php echo $entry_lastname; ?></td>
<td><input type="text" name="lastname" value="<?php echo $lastname; ?>" />
<?php if ($error_lastname) { ?>
<span class="error"><?php echo $error_lastname; ?></span>
<?php } ?></td>
</tr>
<tr>
<td><span class="required">*</span> <?php echo $entry_email; ?></td>
<td><input type="text" name="email" value="<?php echo $email; ?>" />
<?php if ($error_email) { ?>
<span class="error"><?php echo $error_email; ?></span>
<?php } ?></td>
</tr>
<tr>
<td><span class="required">*</span> <?php echo $entry_telephone; ?></td>
<td><input type="text" name="telephone" value="<?php echo $telephone; ?>" />
<?php if ($error_telephone) { ?>
<span class="error"><?php echo $error_telephone; ?></span>
<?php } ?></td>
</tr>
Try searching for $data['action'] variable in controller (register.php). It is there.