Config Manager report: Trying to add Collection selection parameter to a report, but it is not applying

Cross posting from Config Manager general forum:

I have written a basic information collection report with the following dataset/select statements: 

SELECT
  v_GS_COMPUTER_SYSTEM.ResourceID
  ,v_GS_COMPUTER_SYSTEM.Name0
  ,v_GS_OPERATING_SYSTEM.Caption0
  ,v_GS_COMPUTER_SYSTEM.Model0
  ,v_GS_COMPUTER_SYSTEM.Manufacturer0
  ,v_GS_COMPUTER_SYSTEM.SystemType0
  ,v_GS_SYSTEM_CONSOLE_USAGE.TopConsoleUser0
  ,v_GS_NETWORK_ADAPTER.MACAddress0
  ,v_RA_System_IPAddresses.IP_Addresses0
  ,v_RA_System_SystemOUName.System_OU_Name0
  ,v_GS_PC_BIOS.SerialNumber0
  ,v_ClientMachines.SiteCode
FROM
  v_GS_COMPUTER_SYSTEM
  LEFT OUTER JOIN v_GS_SYSTEM_CONSOLE_USAGE
    ON v_GS_COMPUTER_SYSTEM.ResourceID = v_GS_SYSTEM_CONSOLE_USAGE.ResourceID
  INNER JOIN v_GS_NETWORK_ADAPTER
    ON v_GS_COMPUTER_SYSTEM.ResourceID = v_GS_NETWORK_ADAPTER.ResourceID
  INNER JOIN v_RA_System_IPAddresses
    ON v_GS_COMPUTER_SYSTEM.ResourceID = v_RA_System_IPAddresses.ResourceID
  RIGHT OUTER JOIN v_RA_System_SystemOUName
    ON v_RA_System_SystemOUName.ResourceID = v_GS_COMPUTER_SYSTEM.ResourceID
  LEFT OUTER JOIN v_GS_OPERATING_SYSTEM
    ON v_GS_COMPUTER_SYSTEM.ResourceID = v_GS_OPERATING_SYSTEM.ResourceID
  LEFT OUTER JOIN v_GS_PC_BIOS
    ON v_GS_COMPUTER_SYSTEM.ResourceID = v_GS_PC_BIOS.ResourceID
  INNER JOIN v_ClientMachines
    ON v_GS_COMPUTER_SYSTEM.ResourceID = v_ClientMachines.ResourceID
WHERE
  v_RA_System_IPAddresses.IP_Addresses0 NOT LIKE N'fe%'
  AND v_ClientMachines.SiteCode != N'SVR'
GROUP BY
  v_GS_COMPUTER_SYSTEM.ResourceID
  ,v_GS_COMPUTER_SYSTEM.Name0
  ,v_GS_OPERATING_SYSTEM.Caption0
  ,v_GS_COMPUTER_SYSTEM.Model0
  ,v_GS_COMPUTER_SYSTEM.Manufacturer0
  ,v_GS_COMPUTER_SYSTEM.SystemType0
  ,v_GS_SYSTEM_CONSOLE_USAGE.TopConsoleUser0
  ,v_GS_NETWORK_ADAPTER.MACAddress0
  ,v_RA_System_IPAddresses.IP_Addresses0
  ,v_RA_System_SystemOUName.System_OU_Name0
  ,v_GS_PC_BIOS.SerialNumber0
  ,v_ClientMachines.SiteCode

I then added a parameter to select the collection, using the statement below:

select distinct c.CollectionID, c.Name from v_Collection c order by c.Name

The collection dataset was copied from this article: http://blogs.technet.com/b/gary_simmons_mcs/archive/2013/12/10/creating-a-custom-report-for-system-center-2012-r2-configuration-manager-part-3.aspx

When I choose a collection it returns the same result no matter which collection I select. What am I missing? If this should be posted I the SSRS forum, let me know.