title: execute f:setPropertyActionListener when click on button after onclick attribute
body: <p>in one page I have a datatable that contains all users, each line contains two additional columns "edit" and "delete",  the problem is on the botton delete
  when the user click on "delete" button I show him a confirmation dialog with component primefaces and if he clickon "ok" I run a method that delete user from database
  but the problem is in the button : </p>
  
  <pre><code> &lt;p:column&gt;
                      &lt;p:commandButton   actionListener="#{utilisateursController.supprimerUser()}" value="Supprimer" onclick="confirmation.show()" type="button" &gt;
                          &lt;f:setPropertyActionListener id="jesusi" value="#{car}" target="#{utilisateursController.u1}" /&gt;  
                      &lt;/p:commandButton&gt;
                  &lt;/p:column&gt;            
  </code></pre>
  
  <p>to delete the user it must be affected to <code>utilisateursController.u1</code>
  but when I click in this button the code below</p>
  
  <pre><code> &lt;f:setPropertyActionListener id="jesusi" value="#{car}" target="#{utilisateursController.u1}" /&gt;  
  </code></pre>
  
  <p>doesn't be executed</p>
  
  <p>then, the <code>utilisateursController.u1</code>  remains null</p>
  
  <p>do you have any idea
  thank you in advance</p>