Primefaces datatable row selection does not work in viewscope

Primefaces datatable row selection does not work in viewscope

In my application I am using ViewScoped Bean and it does not show selected
row when a row is selected in primefaces datatable. But if I changed the
Bean to a SessionScoped Bean then it shows the selected row perfectly.
my code is like below.
<h:form id="form">
<p:growl id="msgs" showDetail="true" />
<p:dataTable var="pMData" rowIndexVar="rowIndex" value="#
{managedBean.dataModel}" selectionMode="single" paginator="true"
rows="100"
widgetVar="pMTable" emptyMessage="No Records Found."
filteredValue="#{managedBean.filteredRecords}"
selection="#{managedBean.selectedRecord}" rowKey="#{pMData.cellid}">
<p:ajax event="rowSelect" listener="#{managedBean.onRowSelect}"
update=":form:display :form:msgs" oncomplete="moreviewDialog.show()" />
<p:ajax event="rowUnselect" listener="#{managedBean.onRowUnselect}"
update=":form:msgs"/>
<p:column headerText="Cell Name" filterBy="#{pMData.cellid}"
filterStyle="display:none" >
<h:outputText value="#{pMData.modifiedCellID}" />
</p:column>
</p:dataTable>
<p:dialog header="History Data" widgetVar="moreviewDialog"
resizable="false" id="moreviewDlg"
showEffect="fade" hideEffect="explode" modal="true">
<h:panelGrid id="display" columns="2" cellpadding="4" style="margin:0
auto;">
<p:lineChart id="category" value="#
{managedBean.createCategoryModel(managedBean.selectedRecord.cellid)}"
legendPosition="e"
title="NodeB Throughput(kbit/s)" minY="0" maxY="5000"
style="height:300px;margin-top:20px"/>
</h:panelGrid>
</p:dialog>
</h:form>
and my managedBean CDI is like this.
@Named(value = "managedBean")
@ViewScoped
public class ManagedBean implements Serializable {
public void setSelectedRecord(PMData selectedRecord1){
this.selectedRecord=selectedRecord1;
}
public PMData getSelectedRecord(){
return selectedRecord;
}
public void onRowSelect(SelectEvent event) {
FacesMessage msg = new FacesMessage("NodeB Selected",
String.valueOf(((PMData) event.getObject()).getCellid()));
FacesContext.getCurrentInstance().addMessage(null, msg);
}
public void onRowUnselect(UnselectEvent event) {
FacesMessage msg = new FacesMessage("Row Unselected",((PMData)
event.getObject()).getCellid());
FacesContext.getCurrentInstance().addMessage(null, msg);
}
public PMDataModel getDataModel() {
return dataModel;
}
public CartesianChartModel createCategoryModel(String key) { .....}
public List<PMData> getFilteredRecords() {
return filteredRecords;
}
public void setFilteredRecords(List<PMData> filteredRecords) {
// System.out.println("came ");
this.filteredRecords = filteredRecords;
}
}
and PMData and PMDataModel classes are working normally. Can someone help
me to select the row while still using viewscoped bean.