MaxRowsetRecords Registry Setting for CR for .NET 4.0

Can anyone direct me to documentation for this? I have tried several different combos with no luck:

[HKEY_LOCAL_MACHINE\SOFTWARE\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Crystal Reports\DatabaseOptions\LOV]

"MaxRowsetRecords"="5000"

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\SAP BusinessObjects\Crystal Reports for .NET Framework 4.0\Crystal Reports\DatabaseOptions\LOV]

"MaxRowsetRecords"=dword:00005000

I've tried string and dword for both examples above.

thanks!