suggestionbox not working proper no the modal panel

[thiagu.m]

i have a problem when i using suggestionbox on the modal panel
i am using rich faces 3.0.1
i am using backing bean with suggestionbox for auto complete my country text field
it is working proper with out modal panel and ajax support component
when i using ajax support component , each ajax call will clearer the my country text field , how can i resolve my problem
and i have one more problem is
please any one help me
i give my sample code here

<a href="javascript:Richfaces.showModalPanel('reg',{width:450, top:200})">click here</a>
<rich:modalPanel id="reg" height="270" width="500" zindex="2000">
<h:form id="suggestionbox_form">
<s:decorate id="countryDecorate" emplate="layout/edit.xhtml">
 <ui:define name="label">Country:</ui:define>
 <h:inputText value="#{user.country}" id="country" required="true" >
 <a:support event="onblur" reRender="countryDecorate"/>
 </h:inputText>
 <rich:suggestionbox id="suggestionBoxId" for="country" tokens=",[" rules="#{suggestionBox.rules}"
 suggestionAction="#{suggestionBox.autocomplete}" var="result"
 fetchValue="#{result.text}"
 rows="#{suggestionBox.intRows}"
 first="#{suggestionBox.intFirst}"
 minChars="#{suggestionBox.minchars}"
 shadowOpacity="#{suggestionBox.shadowOpacity}"
 border="#{suggestionBox.border}"
 width="#{suggestionBox.width}"
 height="#{suggestionBox.height}"
 shadowDepth="#{suggestionBox.shadowDepth}"
 cellpadding="#{suggestionBox.cellpadding}">
 <h:column>
 <h:outputText value="#{result.text}" />
 </h:column>
 </rich:suggestionbox>


</s:decorate>

</h:form>
 </rich:modalPanel>
===========================================
this is my SuggestionBox class autocomplete method
public List autocomplete(Object suggest)
 {
 String pref = (String)suggest;
 ArrayList result = new ArrayList();
 Iterator iterator = getAllData().iterator();
 do
 {
 if(!iterator.hasNext())
 {
 break;
 }
 Data elem = (Data)iterator.next();
 if(elem != null && elem.getText().toLowerCase().indexOf(pref.toLowerCase()) == 0 || "".equals(pref))
 {
 result.add(elem);
 }
 } while(true);
 return result;
 }