title: submit multiple forms with p:commandbutton
body: <p>I want to submit multiple forms with one submit button. I have multiple forms because each p:fileUpload needs an own form (when in advanced mode).</p>
  
  <p>Here's the code for my submit button:</p>
  
  <pre><code>&lt;h:form id="form1"&gt;...&lt;/h:form&gt;
  &lt;h:form id="form2"&gt;...&lt;/h:form&gt;
  &lt;h:form&gt;
      &lt;p:commandButton value="Save" widgetVar="saveButtonBottom"
      action="#{bean.submit}" ajax="false"
      process=":form1,:form2,@this" /&gt;
  &lt;/h:form&gt;
  </code></pre>
  
  <p>It does call bean.submit(), but it does not process the other forms. Maybe my understanding of processing is wrong, but I thought if I put a form into "process", then it will be submitted.</p>
  
  <p>Any idea how to make it work?</p>