Action of CommandLink/CommandButton in p:treeTable is not invoked - primefaces

Question

I download primefaces 3.1, add to my project tried to add a commandButton/commandLink into a column of a treeTable
but action of commandButton/commandLink in a column is not invoked except the root row.
What may the problem be? Thanks
EDIT:
treeTable in xhtml:
<p:treeTable var="catalog" value="#{catalogSelectBean.root}" lazy="true" selection="#{catalogSelectBean.selectedNode}" selectionMode="single">
<p:column>
<f:facet name="header">
<h:outputText value="Katalog Name" />
</f:facet>
<h:outputText value="#{catalog.name}" />
</p:column>
<p:column width="100">
<f:facet name="header">
<h:outputText value="Katalog Desc"/>
</f:facet>
<h:outputText value="#{catalog.description}"/>
</p:column>
<p:column>
<p:commandButton action="#{formProductRelationView.updateProductListForSelectedCatalog()}"
update=":main_form:selectProductTable"
value="Bring Products">
</p:commandButton>
</p:column>
</p:treeTable>
Bean:
#Component("catalogSelectBean")
#Scope("request")
public class CatalogSelectBean implements Serializable {
private static final long serialVersionUID = 1L;
#Autowired
private CatalogService catalogService;
private TreeNode root;
private TreeNode selectedNode;
private DualListModel<Catalog> pickListCatalogs;
public TreeNode getRoot() {
return root;
}
public TreeNode getSelectedNode() {
return selectedNode;
}
public void setSelectedNode(TreeNode selectedNode) {
this.selectedNode = selectedNode;
}
public void onNodeSelect(NodeSelectEvent event) {
Catalog g = (Catalog)event.getTreeNode().getData();
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Selected", g.getName());
FacesContext.getCurrentInstance().addMessage(null, message);
}
public CatalogSelectBean() {
}
#PostConstruct
public void unLoad(){
createRoot();
createPickListModel();
}
private void createPickListModel() {
//Players
List<Catalog> source = catalogService.loadChilds(catalogService.getRootCatalog());
List<Catalog> target = new ArrayList<Catalog>();
pickListCatalogs = new DualListModel<Catalog>(source, target);
}
private void createRoot() {
Catalog g = null ;
g = catalogService.getRootCatalog();
root = new DefaultTreeNode("Root", null);
TreeNode caRoot = new DefaultTreeNode(g,root);
generateTree(caRoot,g);
}
private void generateTree(TreeNode subRoot, Catalog g) {
for(Catalog p : g.getChildCatalogs()){
TreeNode node0 = new DefaultTreeNode(p,subRoot);
if(p.getChildCatalogs()!= null && p.getChildCatalogs().size()>0)
generateTree(node0, p);
}
}
public void resetTree() {
root.setSelected(false);
}
public DualListModel<Catalog> getPickListCatalogs() {
return pickListCatalogs;
}
}
Also i have a formProductRelationView bean which has the updateProductListForSelectedCatalog() method.
Thanks for attention.