AjaxObserveField does not trigger action

[Kenan Esau]

Hi,

I am trying to update one Popup when another Popup changes. I tried to use this 
as a template:

https://www.mail-archive.com/webobjects-dev@lists.apple.com/msg43630.html 
<https://www.mail-archive.com/webobjects-dev@lists.apple.com/msg43630.html>

But I never get that far since the the AjaxObserveField never triggers the 
action in the underlying java...


<tr>
  <td>PopUp:</td>
  <td>
  <webobject name =  „Popup1" />
  <webobject name =  „Popup1Observer" />
  </td>
</tr>

Popup1 : WOPopUpButton {
        id = „popupone";
        list = allentries;
        item = aEntry;
        displayString = aEntry.name
        selection = selectedEntry
}

Popup1Observer : AjaxObserveField {
        action = popup1Change;
        id = „popupObserver";
        observeFieldID = "popupone";
}

popup1Change() in the underlying java is never called since there is an error 
in the java-script on the client-side:

As soon as I try to use an AjaxObserveField I always get an error in the 
underlying javascript / prototype.js:6416 whenever I change the value of my 
first popup

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

element.tagname is always ‚undefined‘!?!?!

Am I doing something wrong? Is there an example I could use for 
AjaxObserveField and AjaxUpdateContainer?


Thanks for your Help!

    Kenan
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