selectOneMenu does not set the selected option

[Kostas Karadamoglou]

Hi again!
I have a problem with SelectOneMenu, JSF does not set the current 
selection of the user.
this is the jsf tags that I use:

<h:selectOneMenu id="selectCategory" 
value="#{eventHandler.selectedCategory}">
       <f:selectItems id="allCategories" 
value="#{eventHandler.allCategories}"/>
</h:selectOneMenu>

the allCategories returns a list of selectItems which contain 
java.lang.Integer as object. The
selectedCategory is of type int.

While I was debugging the application I 've noticed that JSF does not 
invoke the setter of
selectedCategory.

Do you know how canI solve this problem?
Below I have the getter for each property in the above jsf tags:
   public int getSelectedCategory() {
       return selectedCategory;
   }
   public void setSelectedCategory(int selectedCategory) {
       this.selectedCategory = selectedCategory;
   }
   public List getAllCategories(){
       if(this.allCategories==null){
           this.allCategories=new ArrayList();
           this.allCategories.add(new 
SelectItem(converter.getAsInteger(new Category()),"Choose a category..."));
           List categories=this.eventRegistry.getCategories();
           for(Iterator iter=categories.iterator(); iter.hasNext();){
               Category category=(Category)iter.next();
               this.allCategories.add(new 
SelectItem(converter.getAsInteger(category), category.getTitle()));
           }
       }
       return this.allCategories;
   }