How to pass value via form?

Question

I want to pass a value via form which is generatet like this:

for(var x=0; x<modulsArr.length ; x++){
var modulFormElement=document.createElement("FORM");
modulFormElement.action="lessons.php";
modulFormElement.methode="POST";
var modulInput=document.createElement("INPUT");
modulInput.value=modulsArr[x]; // gibt den wert des ausgewählten moduls weiter
modulInput.name="modul";
modulInput.type="HIDDEN";

var p = document.createElement("p");
var div=document.createElement("div");
var ifra=document.createElement("iframe");
var node = document.createTextNode(modulsArr[x]+" Modul");
//adding the text to the paragraph
p.appendChild(node);
div.appendChild(p);
div.setAttribute("class", "margin");
div.style.marginLeft="10%";
div.style.backgroundColor="white";
p.style.color="royalblue";
p.style.fontSize="16pt";

div._modulData= moduls[x];

div.appendChild(ifra);

div.addEventListener("click", itemClickHandler, false); //fügt submit
modulFormElement.appendChild(div);
modulFormElement.appendChild(modulInput);

el.appendChild(modulFormElement);
}

Answer 1

and than get it via:

<?php
$passModul=$_POST['modul'];
?>

But its not working I get the message :

Undefined index: modul in lessons.php on line 3

Answer 2

forgot to post the itemClickHandler function:

var itemClickHandler= function(event){
// get element which event is attached (div)
var element= event.currentTarget

// get the custom attribute that refers to modul object
var item= element._modulData

element.parentNode.submit()
event.stopPropagation()
};