Updating single record in PHP While Loop - php

Question

Sooo I've been working on a site for a friend of my dads so he can keep his business in check etc. I've been using the While Loop to print out a table of the 'Tasks' that can be inputted in to the site, however when I go to change the status of the task it's not doing so?
I'm sure that is the way I'm getting the ID for locating the record that needs to be updated, but I think I'm on the correct lines. So firstly, is there anything obvious other than my shoddy coding? Secondly, this there any better way of getting the ID or the reasoning for the lack of updating? Much Obliged!
HTML - The page
<table class="tasktable">
<tr>
<th style="text-align: center; width: 100px ">Job Number (ID)</th>
<th style="text-align: center; width: 100px">VRM</th>
<th style="text-align: center; width: 175px;">Date Arrived</th>
<th style="text-align: center;">Work</th>
<th style="text-align: center; width:200px;">Customer</th>
<th style="text-align: center; width: 250px;">Task Progress</th>
</tr>
<?php
include 'Login-System/db.php';
$query = 'SELECT * FROM outstanding WHERE taskprogress = "New" OR taskprogress = "In Progress" ORDER by id ASC';
$result = mysqli_query($conn, $query);
if($result):
if(mysqli_num_rows($result)>0):
while($tasks = mysqli_fetch_assoc($result)):
?>
<tr>
<td style="text-align: center;"><h4 name="jobnumberid"><?php echo $tasks['id'];?></h4></td>
<td style="text-align: center;"><h4><?php echo $tasks['VRM'];?></h4></td>
<td style="text-align: center;"><h4><?php echo $tasks['datearrived'];?></h4></td>
<td style="text-align: center;"><h4><?php echo $tasks['work'];?></h4></td>
<td style="text-align: center;"><h4><?php echo $tasks['customer'];?></h4></td>
<td>
<form action="SQL/taskchange.php" role="form" method="post" id="taskchange">
<select name="taskchanger" id="taskchanger" style="margin-top:6px;
width: 150px; float:left" class="form-control">
<option value="#"><?php echo $tasks['taskprogress'];?></option>
<?php
if ($tasks['taskprogress']== "New") {
echo '<option value="In Progress" class="form-control">In Progress</option>
<option value="Complete" class="form-control">Complete</option>';
} else { if ($tasks['taskprogress']== "In Progress") {
echo '<option value="New" class="form-control">New</option>
<option value="Complete" class="form-control">Complete</option>';
} else {
echo '<option value="New" class="form-control">New</option>
option value="In Progress" class="form-control">In Progress</option>';
}
}
?>
</select>
<button name="save" id="save" class="form-control" style="width: 75px; float:right;margin-top: 6px">Save</button>
</form>
</td>
</tr>
<?php
endwhile;
endif;
endif;
?>
</table>
PHP - Bit that inserts into the DB
<?php
if(isset($_POST['save'])){
include '../Login-System/db.php';
$id = mysqli_real_escape_string($conn, $_POST['jobnumberid']);
$newtask = mysqli_real_escape_string($conn, $_POST['taskchanger']);
$sql = "UPDATE outstanding SET taskprogress = '$newtask' WHERE id = '$id'";
mysqli_query($conn, $sql);
header("Location: ../outstanding.php?updated");
exit();
} else {
header("Location: ../outstanding.php?whoops");
exit();
}