HTML: image name as url parameter does not work? – Blancer.com Tutorials and projects

I have a HTML page which that using an image name as URL parameter. Why doesn’t show the image, what do i wrong?

<!DOCTYPE html>
<html lang="nl">
<head>
    <script src="lib/functions.js"></script>
</head>


<body>

<!-- test03.html?parameter=mountains.jpg -->

<img src="" id="imagename">

<script>
    const queryString = window.location.search;
    const urlParameters = new URLSearchParams(queryString);
    const Parameter = urlParameters.get('parameter');
    document.getElementById("imagename").innerHTML = Parameter;
</script>

</body>

</html>