Setting XML attribute with a variable

[rgrima]

Is there any way to set an attribute with a variable?

Something like this:

  <parameterset name="defineProblem">
    <parameter name="outpath" tag="test-name1">test-name1</parameter>
    <parameter name="outpath" tag="test-name2">test-name2</parameter>
  </parameterset>
  <benchmark name="TEST-NAME" outpath=$outpath>

  </benchmark>