Rich:Sutable not working Help

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Hi All

I am facing a issue with rich:Sutable please help if you can find out the issue.

<rich:dataTable value="#{MasterHome.receivingInfos}" var="ReceivingInfo">

displaying all the properties of ReceivingInfo

<rich:subTable value="#{dBUtil.getResultList(ReceivingInfo.id)}" var="Info">
          
displaying all the properties of Info
</rich:subTable >
</rich:dataTable >

This is what i am trying to do. All the properties are displayed including the id but subtable is not displayed. When i did debugging I found that id in dBUtil.getResultList() method is 0 always even though it is displayed in datatable.

Anybody knows why this is happening.

Advanced Thanks