Data of different session are not getting refreshed.

Question

We used select one choice and it is bind to the iterator. Data of different session are not getting reflected.
Problem Scenario : Two browsers are open with same screen . In browser-1, I am adding new item which display on drop down of same screen. But drop down of browser-2 is not displaying the new added value.
Please let me know how to refresh the data of browser-2 if I added data on different session.
//JSFF entry
<af:selectOneChoice binding="#{backingBeanScope.Product.ICTCSTName}"
id="iCTCSTName" simple="true"
label="#{bindings.tpCrudeSuperTypeFindAllPopulatedCT.label}"
required="#{bindings.tpCrudeSuperTypeFindAllPopulatedCT.hints.mandatory}"
value="#{bindings.tpCrudeSuperTypeFindAllPopulatedCT.inputValue}"
autoSubmit="true">
<f:selectItems value="#{bindings.tpCrudeSuperTypeFindAllPopulatedCT.items}"
binding="#{backingBeanScope.Product.si2}"
id="si2"/>
</af:selectOneChoice>
//Pagedef entry
<list IterBinding="tpCrudeSuperTypeFindAllPopulatedCTIterator"
ListOperMode="navigation"
ListIter="tpCrudeSuperTypeFindAllPopulatedCTIterator"
id="tpCrudeSuperTypeFindAllPopulatedCT" DTSupportsMRU="true">
<AttrNames>
<Item Value="superTypeName"/>
</AttrNames>
</list>

Answer 1

Are you sure backingBeanScope is the correct scope for your scenario?
Session scope sound more appropriate to me.
binding="#{backingBeanScope.Product.si2}"