Simply,

I am trying to define a Converter than returns True when the input value is superior to 1. For that I am using the CompareConverter from CommunityToolkit like so:

<mct:CompareConverter
    x:Key="GreaterThanOneConverter"
    ComparisonOperator="Greater"
    TrueObject="True"
    FalseObject="False">
    <mct:CompareConverter.ComparingValue>
        <x:Int32>1</x:Int32>
    </mct:CompareConverter.ComparingValue>
</mct:CompareConverter>

The issue is that this wont compile:

“No property, BindableProperty, or event found for “ComparingValue”,
or mismatching type between value and property”

-> What is the syntax to define an integer whose value is 1 in XAML ?

Note: I have been able to do it by defining the integer as a static resource and then referencing it but it feels tedious and so I was wondering if there was another way.