[msmom] Creating Groups in VSAE:

[Orlebeck, Geoffrey]

I am attempting (for the first time) to author a group via VSAE. I am 
attempting to just match on a hostname as a first step, but I haven't 
successfully populated the group. I also tried creating a group in the console, 
exporting the unsealed MP and following the logic without success.

I referenced these links:
https://blogs.technet.microsoft.com/kevinholman/2009/06/10/creating-custom-dynamic-computer-groups-based-on-registry-keys-on-agents/
http://blog.scomskills.com/create-a-computer-or-instance-group/
https://stefanroth.net/2013/11/11/scom-vsae-custom-dynamic-computer-groups-based-on-server-registry-keys/

Any help is appreciated. Thank you very much.

Sanitized MP Fragment:

<ManagementPackFragment SchemaVersion="2.0" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
  <TypeDefinitions>
    <EntityTypes>
      <ClassTypes>
        <ClassType ID="Test.Override.Group" Abstract="false" 
Accessibility="Public" Base="SC!Microsoft.SystemCenter.ComputerGroup" 
Hosted="false" Singleton="true" />
      </ClassTypes>
    </EntityTypes>
  </TypeDefinitions>
  <Monitoring>
    <Discoveries>
      <Discovery ID="Test.Override.Group.DiscoveryRule" Enabled="true" 
Target="Test.Override.Group" ConfirmDelivery="false" Remotable="true" 
Priority="Normal">
        <Category>Discovery</Category>
        <DiscoveryTypes>
          <DiscoveryRelationship 
TypeID="MSIL!Microsoft.SystemCenter.InstanceGroupContainsEntities" />
        </DiscoveryTypes>
        <DataSource ID="GroupPopulationDataSource" 
TypeID="SC!Microsoft.SystemCenter.GroupPopulator">
          <RuleId>$MPElement$</RuleId>
          
<GroupInstanceId>$MPElement[Name="Test.Override.Group"]$</GroupInstanceId>
          <MembershipRules>
            <MembershipRule>
              
<MonitoringClass>$MPElement[Name="Windows!Microsoft.Windows.Server.Computer"]$</MonitoringClass>
              
<RelationshipClass>$MPElement[Name="MSIL!Microsoft.SystemCenter.InstanceGroupContainsEntities"]$</RelationshipClass>
              <Expression>
                <RegExExpression>
                  <ValueExpression>
                    
<Property>$MPElement[Name="Windows!Microsoft.Windows.Computer"]/NetbiosComputerName$</Property>
                  </ValueExpression>
                  <Operator>ContainsSubstring</Operator>
                  <Pattern>HOSTNAME</Pattern>
                </RegExExpression>
              </Expression>
            </MembershipRule>
          </MembershipRules>
        </DataSource>
      </Discovery>
    </Discoveries>
  </Monitoring>
  <LanguagePacks>
    <LanguagePack ID="ENU" IsDefault="true">
      <DisplayStrings>
        <DisplayString ElementID="Test.Override.Group">
          <Name>Test Override</Name>
          <Description>Searches for 'Windows Server Computer' matching 
"HOSTNAME".</Description>
        </DisplayString>
        <DisplayString ElementID="Test.Override.Group.DiscoveryRule">
          <Name>Discovery rule populates "Test Override" group.</Name>
        </DisplayString>
      </DisplayStrings>
    </LanguagePack>
  </LanguagePacks>
</ManagementPackFragment>
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