Soap Call to PSI Resource.asmx - UpdateResource

Hi Experts,

I am trying to update a Resource name through PSI using SoapUI and I have been facing some issues in understanding how to make the Soap call to the operation UpdateResources. My problem is maintaining the DataSet element and this is what I am trying to pass to update the Resource Name field:

   <soapenv:Body>
      <res:UpdateResources>
         <res:rds>
            <Resources>
               <RES_UID>7da7122b-e835-4a14-9f4a-71f6002c32eb</RES_UID>
              <RES_NAME>Ricardo Test</RES_NAME>
            </Resources>
         </res:rds>
         <res:validateOnly>false</res:validateOnly>
         <res:autoCheckIn>true</res:autoCheckIn>
      </res:UpdateResources>
   </soapenv:Body>

Could you please tell me if I am doing something wrong?

Thanks in advance.

Regards,

Ricardo