jsf - Primefaces - Ajax commandButton -

I have a problem, the way it is in the lower code, do not call it exampleController.include () Can anyone tell me what I am doing?

  & lt; H: form id = "exampleForm" & gt; & Lt; P: panel toggleable = "true" id = "pgInfo" & gt; & Lt; H: Panel Grid Column = "2" Cellpadding = "2" & gt; & Lt; P: input mask value = "" id = "val" /> & Lt; / H: panelGrid & gt; & Lt; H: Panel Grid Column = "3" CellPadding = "3" & gt; & Lt; P: Command button icon = "ui-icon-disk" value = "add" actionListener = "# {exampleController.include ()}" ajax = "true" update = "dataTable" process = "pgInfo" /> & Lt; / H: panelGrid & gt; & Lt; / P: Panel & gt; & Lt; P: panel toggleable = "true" id = "panelTable" & gt; & Lt; H: Panel Grid Column = "1" Cellpadding = "1" & gt; & Lt; P: datatable id = "datable" & gt; ... & lt; / P: Datatable & gt; & Lt; / H: panelGrid & gt; & Lt; / P: Panel & gt; & Lt; / H: form & gt;