How to set specific action to f:selectItems in JSF2

I have with ajax

<h:selectOneMenu>
<f:selectItem itemLabel="please click"/>
<f:selectItem itemLabel="1"/>
<f:selectItem itemLabel="2"/>
<f:ajax onevent="click()" />
</h:selectOneMenu>

I have with onChange

<h:selectOneMenu onChange="click()>
<f:selectItem itemLabel="please click"/>
<f:selectItem itemLabel="1"/>
<f:selectItem itemLabel="2"/>    
</h:selectOneMenu>

if I try the same attributes to selectItem, it doesnt work. I think they dont exist.

I used ajax, onChange but it seem to wrok for selectonemenu but not in particular for selectItem.