Update for Cisco Productivity Tools is not detected as applicable - the Value is found in WOW6432Node-Registry:
<lar:And>
<WSUS Generated MSI Installable Rule/>
<lar:And>
<bar:RegValueExists Key="HKEY_LOCAL_MACHINE" Subkey="SOFTWARE\Webex\Plugins" Value="buildnumber" Type="REG_DWORD" />
<bar:RegSzToVersion Comparison="LessThan" Data="39.11.3.6" Value="buildnumber" Key="HKEY_LOCAL_MACHINE" Subkey="SOFTWARE\Webex\Plugins" />
</lar:And>
</lar:And>