Scripting SoupUI to run one request with different data

Is it possible and if yes than how, to run a single XML request with different data. Here is an example of the request:

<soapenv:Envelope xmlns:soapenv="http://ift.tt/sVJIaE" xmlns:chan="xxx">
   <soapenv:Header/>
   <soapenv:Body>
      <chan:hire>
         <MessageID>123</MessageID>
         <Worker>
            <WorkerId>987</WorkerId>
            <FirstName>aaa</FirstName>
            <LastName>aTest</LastName>
         </Worker>
      </chan:hire>
   </soapenv:Body>
</soapenv:Envelope>

I'd like to write a groovy script that will run the request eg. 10 times, each time incrementing MessageID and WorkerID by one and changing name (aaa>bbb>ccc>etc.) and respectively surname aTest>bTest>cTest. If that's impossible than at least name like a>aa>aaa>aaaa and surname b>bb>bbb>bbbb etc.

Thanks! :)