<ROOT>
	<ITEM>
		<PARAM BSNAME="ID" BSVALUE="212" ROWID="-1" />
		<PARAM BSNAME="UDF1" BSVALUE="R" ROWID="1" />
		<PARAM BSNAME="UDF2" BSVALUE="1.18" ROWID="-1" />
		<PARAM BSNAME="UDF3" BSVALUE="G" ROWID="4" />
		<PARAM BSNAME="UDF4" BSVALUE="V1" ROWID="5" />
		<PARAM BSNAME="PRC" BSVALUE="78" ROWID="-1" />
		<PARAM BSNAME="UDF5" BSVALUE="G" ROWID="1" />
		<PARAM BSNAME="UDF6" BSVALUE="5" ROWID="-1" />
		<PARAM BSNAME="UDF7" BSVALUE="6.72* 6.77* 4.19" ROWID="-1" />
		<PARAM BSNAME="UDF8" BSVALUE="62.1" ROWID="-1" />
		<PARAM BSNAME="UDF9" BSVALUE="57" ROWID="-1" />
		<PARAM BSNAME="UDF11" BSVALUE="N" ROWID="8" />
                .........
	</ITEM>
        <ITEM>.....</ITEM>
        <ITEM>.....</ITEM>
        ..............
</ROOT>

//ITEM[PARAM/@BSNAME='UDF1' and PARAM/@ROWID!=1]

 [(PARAM/@BSNAME='UDF1' and PARAM/@ROWID!=1) or ((PARAM/@BSNAME='UDF11' and PARAM/@BSVALUE!='N')]