Deduplication cmdlet, parameter not found -ContinueWhenSystemBusy

Hello All,

I'm having some troubles with the start-dedupjob cmdlet in server2012 standard. According to the help, I can use the parameter -ContinueWhenSystemBusy. When I try to use it, I get the following error:

PS C:\Windows\system32> start-dedupjob -type optimization E: -ContinueWhenSystemBusy true
Start-DedupJob : A parameter cannot be found that matches parameter name 'ContinueWhenSystemBusy'.
At line:1 char:38
+ start-dedupjob -type optimization E: -ContinueWhenSystemBusy true
+                                      ~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Start-DedupJob], ParameterBindingException
    + FullyQualifiedErrorId : NamedParameterNotFound,Start-DedupJob

Can somebody confirm/deny the observed behaviour?

Best Regards,
Willem