java - PanelGrid and OutputLabel -

i got problem code. want have selectonemenu select customer (this 1 works fine me). after selected element, should see id of customer in outputtext. not work:

<h:form id="form">   <h:panelgrid columns="2">     <h:outputlabel for="customer" value="customer: " />     <h:selectonemenu id="customerlist"     value="#{customercontroller.selected}" required="true">       <f:selectitems value="#{customercontroller.items}"       var="customer"       itemlabel="#{customer.id} #{customer.firstname} #{customer.lastname} #{customer.email}"       itemvalue="customer" />       <p:ajax update=":form:myid" />     </h:selectonemenu>     <h:outputlabel value="customer id: " for="myid" />     <h:outputtext id="myid"     value="#{customercontroller.selected.id}" />   </h:panelgrid> </h:form> 

any ideas?

try use:

<p:ajax update="myid" />