Given the below XML file:

<Top>
  <Tree id="doc" lang="en" refid="tree">
    <blocks>
      <block id="block" order="1.1" refid="Type0" type="table">
        <parameters>
          <parameter id="Name" value="Bob"/>
          <parameter id="Position" value="Developer"/>
        </parameters>
      </block>
      <block id="block" order="1.2" refid="Type1" type="table">
        <datatables>
          <datatable tableid="Type1">
            <rows>
              <row order="7">
                <datum id="a" value="value00"/>
                <datum id="b" value="value11"/>
                <datum id="c" value="value22"/>
              </row>
            </rows>
          </datatable>
        </datatables>
      </block>
    </blocks>
    <outputs>
      <output name="out" type="doc"/>
    </outputs>
  </Tree>
</Top>

I have defined the following rowmapping:

//block/*

Now I would like to extract all id and values from :

parameters and datum

I have tried:

parameter/@id
parameter/@value
datatable/rows/row/datum/@id
datatable/rows/row/datum/@value

but that only gives me the first entry. Any ideas?

How do I get