Problem with Trinidad Nested Table (depth 3)

Hi all I am trying to create a nested Table of depth 3 but I am getting "java.lang.NumberFormatException"! strange.

I am able to create nested Table of depth 2 and it works fine but facing problem when I nest 3 tables.

Here is the jsf code with 3 nested tables. Instead of third table inside <f:facet name="detailStamp"> I had put an outputText tag then it works fine but when I place a table I get NumberFormatException with subInvAdjList!

<tr:table allDetailsEnabled="false" var="row" 
                 rowBandingInterval="1" value="#{pc_DemoTreeTable.tableData}" 
                 summary="Element information">
            	<tr:column headerText="Mbr ID">
              		<tr:outputText value="#{row.mbrId}"/>
            	</tr:column>

<f:facet name="detailStamp">
            	<tr:table allDetailsEnabled="false" var="subList" 
                 rowBandingInterval="1" value="#{row.subList}" 
                 summary="Element information">            	
            	<tr:column headerText="Cvg Lvl">
              		<tr:outputText value="#{subList.cvgLvl}"/>
            	</tr:column>
            	
            	<f:facet name="detailStamp">
	            	 <tr:table allDetailsEnabled="false" var="subInvAdjList"
	                 rowBandingInterval="1" value="#{row.subList.subInvAdjList}" 
	                 summary="Element information"> 
	            	<tr:column headerText="Adjustment Date">
	              		<tr:outputText value="#{subInvAdjList.adjDate}"/>
	            	</tr:column>
	            	</tr:table>
            	</f:facet>
            	
            	</tr:table>
            	</f:facet>
          	</tr:table>

Do anyone faced similar situation? plesae help me.

Thanks.

Hi All I found the problem.. it is in my EL of the 3rd table. EL should be subList.subInvAdjList