How to set a value to the TextField on keyPress Event?

Hai,
I am using Jdev 11g.
In my jspx page,i have an Input Text...I want to set a value to that input text when i press any button (say F2) inside that text field .I tried with clientListener and server Listener..But it is not set.
In jspx page
*========*
<f:facet name="metaContainer">
<trh:script>
function onKeypressClientListner(evt) {
var _txtField; var valueStr;
_txtField = evt.getSource();        
if (evt.getKeyCode() == AdfKeyStroke.F2_KEY) {
valueStr = _txtField.getSubmittedValue()
AdfCustomEvent.queue(_txtField,"onKeyPressServerListner",{payload:valueStr}, true); evt.cancel();
</trh:script>
</f:facet>
<af:inputText label="Label 1" id="it1"
binding="#{backing_CheckKeyPress.itxtInputText}">
<af:clientListener method="onKeypressClientListner" type="keyUp"/>
<af:serverListener type="onKeyPressServerListner"
method="#{backing_CheckKeyPress.serverKeyListner}"/>
</af:inputText>
In CheckKeyPress.java
*======*
public void serverKeyListner(ClientEvent clientEvent)
System.out.println("Inside Server Listener");
itxtInputText.setValue("Hai");
AdfFacesContext.getCurrentInstance().addPartialTarget(itxtInputText);
After executing this,program will give output as Inside Server Listener . But the TextField value is not setting..

I got it..Just set immediate property to true

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