Is it possible to bind Left/Right WindowCommands using MVVM?

[jeleleven]

I'm moving my codebase back to MahApps after rolling my own window styles for a while and I have a question about WindowCommands.

Is it possible to bind them to a ViewModel? I would like certain windows to show only certain buttons, but I can't for the life of me figure out how to get the WindowCommands to show when bound to a WindowCommands object.

<mah:MetroWindow xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls" 
        x:Class="System_Windows.System_Management_Window"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
        xmlns:windows="clr-namespace:Common_Code.ViewModels."
        mc:Ignorable="d"
        Title="System Management Window" Height="700" Width="900" Loaded="Window_Loaded" Closing="Window_Closing" KeyUp="Window_KeyUp" RightWindowCommands="{Binding RightCommands}" LeftWindowCommands="{Binding LeftCommands}">

    <d:Window.DataContext>
        <windows:Base_Window_ViewModel/>
    </d:Window.DataContext>
    
    <Grid>
    </Grid>
</mah:MetroWindow>

When I bind them to WindowCommands objects in this way I don't see anything.

If I set the same objects directly to the MetroWindow.LeftWindowCommands or MetroWindow.RightWindowCommands in code behind it works. I feel like there's something I'm just not seeing.

Thanks in advance.