Problem with <input type ="hidden"/> php/html

Question

I currently have the problem that the value from the input type hidden "var" doesnt exist :(

<form id ="bewerbung" name = "bewerbung" action="./edit" method="POST">
<div class="form-group">
    <input type="hidden" value="Supporter" id ="type" name="type" />
    <button type="submit" value="Submit" class="form-control-submit-button">Bewerbung</button>
                                
</div>

The edit page :

if (isset($_POST['type'])){
    echo "set";
}else {
    echo "not set";
}

the output : not set :/

Answer 1

Thanks @Aaron, the final Solution was to add an "/" at the end of the action. just like :

<form method="POST" action="./edit/">