Task to set attribute of XML input

[Farrukh Najmi]

I need a task in my process to update XML input to the task. Most immediately I simply need to set an attribute on teh root element.
Perhaps I may later need to modify the XML input in more complex ways.

I am guessing that I need to use a scriptTask with an XSLT script. Does this sound right?

If so, XSLT defines no special mediatype so what should be the value of the scriptFormat? Is it unspecified and just needs to match whatever the BPMN process engine supports?

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Regards,
Farrukh