parameter use in simple transformation

Hi all,

I would like change the following simple transformation such that the underlined area is dynamic:

<?sap.transform simple?>

<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">

  <tt:root name="JS_COMMAND_ID"/>

  <tt:template>

    <Jetstream xmlns=http://Jetstream.TersoSolutions.com/v1.0/CommandResponse>

I have created a parameter that I am able to successfully pass into the transformation:

<tt:parameter name="VERS" kind="in" type="STRING"/>

I can see that this parameter contains the correct value in the debugger.  However, when I try to use it as so:

<Jetstream xmlns="VERS">

I receive an element mismatch error.  I have also tried "$VERS" with no success either.

Any suggestions?