Retrieve text of a input=text to change name of an image

[Knet89]

Hi, Thanks a lot for your code, i have an issue, im trying to retrieve the text of the input=text an form like this:

<form method="post" enctype="multipart/form-data"> <input type="file" name="files[]" multiple> <br> <label>New Name</label> <input type="text" id="cod" name="cod"> <br> <input type="submit" value="Upload File" name="submit" /><br> </form>
and my idea is that the name of the image is like the text of the input text called "cod"... but it is not renamed with the new name, instead it renames it as undefined.png

and if it is posible, i do not want to upload multiple files, instead only one file.

I will send you the files if you want to analyze the code, can you help me?
index.zip

[Knet89]

Somebody help me to resolve the issue,
in upload.js
the property of this line it is not ".cod" :
const cod = document.querySelector('[type=text]').cod;

instead, the code it will be like this.
const cod = document.querySelector('[type=text]').value;

it resolve the issue...