Okay, and if you are trying to use show it on tracer, you have to select a property under the row.
Like, Output_Data.Output{/Rowsets/Rowset/Row[WORK_CEN_LN_SEG = 'ST_04_01']/NEXT_OPER}
For other operations, have it assigned to an xml document and then check the result.
Thanks,
Swaroop