How to create custom DataSet for SoapUI DataExport xml/csv report

Did anyone tried to change xml or csv reports to custom structure of data sets, that could be used to export reports from SoapUI Pro. My idea was - to extend startTime or add additional field of start date and testSuite/testCase description in testSuiteResults.xml. Or maybe I could add additional data set?

I want to achive smt like that:

<testCase>

<reason></reason>

<startTime>28.08.2015 01:32:04</startTime>

<description>test case description</description>

<status>FAILED</status>

<testCaseName></testCaseName>

<timeTaken>0</timeTaken>

<testStepResults/><failedTestSteps/>

</testCase>