Custom Filter not receiving an argument

[KolbeItDeveloper]

I'm currently in the process of creating a custom equality operator that always returns true on null and executes the base equality behavior if there's a value. I'm currently facing two issues, but i'd like to focus on one for the time being.

I have this class

using System;
using System.Linq;
using System.Linq.Expressions;
using System.Reflection;
using HotChocolate.Data.Filters;
using HotChocolate.Data.Filters.Expressions;
using HotChocolate.Language;
using HotChocolate.Types;

public class QueryableOptionalEqualsHandler : QueryableStringEqualsHandler
{
public QueryableOptionalEqualsHandler(InputParser inputParser) : base(inputParser)
{
}

protected override int Operation => DefaultFilterOperations.Equals;

public override Expression HandleOperation(
    QueryableFilterContext context,
    IFilterOperationField field,
    IValueNode value,
    object parsedValue)
{
    return Expression.Or(
        base.HandleOperation(context, field, value, parsedValue),
        Expression.Equal(Expression.Constant(parsedValue), Expression.Constant(null))
    );
}

}

It's registered via startup.cs
.AddFiltering()
.AddConvention(
new FilterConventionExtension(
x => x.AddProviderExtension(
new QueryableFilterProviderExtension(
y => y.AddFieldHandler()
)
)
)
)

alongside this GraphQL where filter

query GetQuotes($email: string){
quotes(where : {
createdBy:
{
eq: $email
}
}

The issue i'm facing however is that my custom equality operation get's a null value when the $email is populated, but hardcoding email: "[email protected]" will pass the value along to the parsedValue parameter.

Is there a better way of going about this?