Hi gavin
Thank you for your post. The form is a bootstrap component. To show the filename for the chosen file you will need to add an extra step with a script. Its just 3 lines of code with a 'onChange' function. You can read about it here: https://stackoverflow.com/questions/48613992/bootstrap-4-file-input-doesnt-show-the-file-name
<script type="application/javascript">
$('input[type="file"]').change(function(e){
var fileName = e.target.files[0].name;
$('.custom-file-label').html(fileName);
});
</script>