Update <p:dialog> whenever new dialog box open in PrimeFaces - primefaces

Question

It keeps showing the previous value instead of the new one.
<p:panel id="instantTransPanel" header="Quick Transfer (To Beneficiary)" toggleable="true" closable="false" toggleSpeed="500" closeSpeed="500" widgetVar="instantTransPanelVar"
rendered="#{userMBean.loggedOnUser.customer.customerType != constantuserMBean.getFETSTYPE() and (userMBean.loggedOnUser.customer.customerType != constantuserMBean.getMERCHANTTYPE() or (userMBean.loggedOnUser.customer.customerType == constantuserMBean.getMERCHANTTYPE() and userMBean.loggedOnUser.customer.hasCustomerCapability))}">
<p:commandButton value="Add New Beneficiary" onclick="addBendlg.show();" />
<br/><br/>
<p:dataTable id="beneficiariesTable" var="obj" value="#{userMBean.loggedOnUser.customer.customerBeneficiaryList}"
paginator="true" rows="20"
paginatorTemplate="{CurrentPageReport} {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
rowsPerPageTemplate="20,50,100" style="width:100%" resizableColumns="true">
<p:column sortBy="#{obj.beneficiaryMsisdn}" headerText="Mobile Number" filterBy="#{obj.beneficiaryMsisdn}" filterMatchMode="contains">
<h:outputText value="#{obj.beneficiaryMsisdn}" />
</p:column>
<p:column sortBy="#{obj.beneficiaryName}" headerText="Name" filterBy="#{obj.beneficiaryName}" filterMatchMode="contains">
<h:outputText value="#{obj.beneficiaryName}" />
</p:column>
<p:column sortBy="#{obj.crt_dt}" headerText="Date Added">
<h:outputText value="#{obj.crt_dt}" />
</p:column>
<p:column headerText="Transfer">
<p:commandButton value="Transfer" update=":form:transferBenPanel" action="#{engineMBean.initTransfer(obj.beneficiaryMsisdn, obj.beneficiaryName)}" oncomplete="transferToBendlg.show();" />
</p:column>
<p:column headerText="Delete">
<p:commandButton ajax="false" onclick="return confirm('Are you sure?');" action="#{userMBean.deleteBeneficiary(obj.beneficiaryMsisdn)}" icon="ui-icon-close" style="margin:0"/>
</p:column>
</p:dataTable>
</p:panel>
After that it calls dialog and it works properly the first time but the next time I want to enter another value once clicked it pops up with the old values.
<p:dialog id="addBenDialog" header="Add Beneficiary" widgetVar="addBendlg" modal="true" dynamic="true" position="center">
<p:panelGrid columns="2" cellpadding="5" style="margin-bottom:10px;">
<f:facet name="header"></f:facet>
<h:outputLabel for="bmsisdn" value="Beneficiary Mobile Number: *" />
<p:inputText id="bmsisdn" value="#{userMBean.beneficiary.beneficiaryMsisdn}">
<p:ajax update="bname" />
</p:inputText>
<h:outputLabel for="bname" value="Beneficiary Name: " />
<h:outputText id="bname" value="#{userMBean.lookUpBeneficiaryName(userMBean.beneficiary.beneficiaryMsisdn)}" />
<f:facet name="footer">
<p:commandButton ajax="false" onclick="return confirm('Are you sure?');" action="#{userMBean.addBeneficiary}" value="Save" icon="ui-icon-disk" style="margin:0"/>
</f:facet>
</p:panelGrid>
</p:dialog>

Answer 1

You need to update the dialog box before it shows.
Change code as:
<p:commandButton value="Add New Beneficiary" onComplete="addBendlg.show(); update=:form:addBenDialog" />