How to Convert XPath Nodelist Attributes to Strings - xpath

Question

I have an XPath expression that returns the following items but need to get the values from them. (respectively "2" & "3" but entire attribute would work too)
(my xml and path expression is here: Getting Upper XPath Value Based on Lower XML value)
Attribute='SERepeatKey =2'
Attribute='SERepeatKey =3'
This doesn't work
NodeList nl = (NodeList) xPath.compile(strXPath).evaluate(docODM, XPathConstants.NODESET);
for (int x = 0; x < nl.getLength(); x++){
Node ser = nl.item(x);
String sSer = ser.getAttributes().getNamedItem("SERepeatKey").getNodeValue().toString();
}

Answer 1

I removed the #SERepeatKey from the previous XPath statement to return the entire xml nodes then the above statement worked returning the "2" and "3" values.
<Data SOID="(DEV)" MetaDataVersionOID="" >
<SData SKey="003-003" >
<SiteRef LOID="SE 003"/>
<SEData SEOID="UNSCHEDULED" SERepeatKey="2">
<FData FOID="REQUIRED" FormRepeatKey="1">
<IGData IGOID="REQUIRED" IGRepeatKey="0" TransactionType="Upsert">
<IData ItemOID="REQUIRED.REQ_V" Value="1" />
</IGData>
</FData>
</SEData>
</SData>
</Data>
<Data SOID="(DEV)" MetaDataVersionOID="" >
<SData SKey="003-003" >
<SiteRef LOID="SE 003"/>
<SEData SEOID="UNSCHEDULED" SERepeatKey="3">
<FData FOID="REQUIRED" FormRepeatKey="1">
<IGData IGOID="REQUIRED" IGRepeatKey="0" TransactionType="Upsert">
<IData ItemOID="REQUIRED.REQ_V" Value="1" />
</IGData>
</FData>
</SEData>
</SData>