Thank you very much @Yuri Marx ! Very nice!
 

Wuhuuuuuu! Congratulations!!!!

Hello Guilherme,

I'm not sure about what your goal is, but alternatively, you can use Stored Procedure attached to each group

<report xmlns="http://www.intersystems.com/zen/report/definition" name="MyName" runonce="true">
    <attribute name='attribute1' expression='..GetXXXXX(..P1)'/>
    <attribute name='attribute2' expression='..GetXXXXX(..P2)'/>
    <group name="GroupQuery1" queryClass='Custom.Reports.ZEN.StoredProc.StoredProc1' queryName='Query1'>
      <parameter field="attribute1"/>
      <parameter expression="..GetYYYY()"/>
      ...
      <group name="GroupResponse1">
        ...
      </group>
    </group>
    <group name="GroupQuery2" queryClass='Custom.Reports.ZEN.StoredProc.StoredProc2' queryName='Query2'>
      <parameter field="attribute2"/>
      <parameter expression="..GetZZZZZZ()"/>
      ...
      <group name="GroupResponse2">
        ...
      </group>
    </group>
</report>

Hope this help

Regards,

Jacques