jsf - primefaces input text passing to managedbean as null in dialog(modal=true) -


i use primefaces 5.1 , jsf 2.2 .i have dialog (modal=true) .i have fullpagelayout.and have menuitems.İf u clicked menua,opening datatable.and firstly u select row , showing dialog.enter th password , submit it.all works fine.and in same page(if u didn't click menu items etc.) u can properly.but if u click menua menuitems in fullpagelayout again.it not work.password value passing null managedbean.so showing password required message.(managed bean scoped viewscoped)
codes:

<h:form id="bla">     //datatable     <p:ajax event="rowselect" update="..dialog.."                                 onstart="pf('dialog').show()" /> </h:form>  <p:dialog header="welcome" widgetvar="dialog" position="center center"     closeonescape="true" showeffect="fade" hideeffect="fade"     appendto="@(body)" draggable="false" resizable="false" modal="true">      <h:form id="blabla">         <p:password id="password" value="#{bean.value}"             requiredmessage="required password!" required="true">             <f:validatelength minimum="4" maximum="6" />         </p:password>          <p:commandbutton value="go" update="growl" action="#{bean.valueop()}"             oncomplete="pf('dialog').hide()">         </p:commandbutton>     </h:form> </p:dialog>

why password value passing backing bean null?thanks in advance.. enter image description here enter image description here


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