%(Filename) includes extension for XAML files

I am trying to nest my ViewModels under my XAML files using the following naming convention `PageNameViewModel.cs`

I was trying to create the nesting by using this:

``

The problem I am facing is that the %(Filename) variable includes the `.xaml` extension (MainPage.xaml), which according to the documentation, it shouldn't. (https://docs.microsoft.com/en-us/visualstudio/msbuild/msbuild-well-known-item-metadata)

This means that my statements are the same as:

``

Obviously, this is not what I am wanting to achieve. How can I get just the file name and not include the XAML extension?