Get-DfsrBacklog for an individual Replication Group using Powershell

I am attempting to get the backlog count of an individual replication group using powershell. I have found several examples but none of them are working. I have attempted the following:

1. Get-DfsrBacklog -Folder "Kalamazoo"

Error: Get-DfsrBacklog : Cannot process argument transformation on parameter 'Folder'. Cannot convert the "Kalamazoo" value
of type "System.String" to type "Mwcc.Management.Dfs.DfsrFolder".
At line:1 char:25
+ Get-DfsrBacklog -Folder "Kalamazoo"
+                         ~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Get-DfsrBacklog], ParameterBindingArgumentTransformationException
    + FullyQualifiedErrorId : ParameterArgumentTransformationError,Get-DfsrBacklog