Hi,

I am trying to update a selection list when a value in the drop down list is 
changed.  I am using "AjaxObserveField" and "AjaxUpdateContainer" components to 
achieve this functionality.  But when I change the value in the drop down list 
then the entire components or elements existing in the Ajax Update Container 
div are getting cleared off.  It is showing "500 Error" in the browser error 
console. 

Following is the code snippet:
------------------------------------WOD Code 
Snippet------------------------------------
PopUpButton1: WOPopUpButton {
        id = "YearFieldID";
        list = yearList;
        displayString = currentYear.desc;
        item = currentYear;
        selection = selectedYear;
}

YearObserveField : AjaxObserveField {
        observeFieldID = "YearFieldID";
        updateContainerID = "TeacherDiv1";
        fullSubmit = false;
}

TeacherUpdateComponent : AjaxUpdateContainer {
        id = "TeacherDiv1";
}

Form1: WOForm
{
        multipleSubmit = true;
}
------------------------------------WOD Code 
Snippet------------------------------------
------------------------------------HTML Code 
Snippet------------------------------------
<WEBOBJECT name=Form1>

<WEBOBJECT NAME=PopUpButton1></WEBOBJECT>

<WEBOBJECT name = "YearObserveField"></WEBOBJECT>

<WEBOBJECT name="TeacherUpdateComponent">  
        <WEBOBJECT NAME=Browser2>       
</WEBOBJECT>

</WEBOBJECT>
------------------------------------HTML Code 
Snippet------------------------------------

Thanks for any suggestions.

Regards,
Raghu.

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