I'm trying to add phone number to the new advanced search, but I must be doing something wrong or forgetting something, as it does not show up.

Can anyone point me in the right direction?

This is my filter

[AdvancedFilter("billingTelephone", "Phone Number", "A full or partial cart number to search on", Group = "Customer")]
    public class OrderPhoneNumberFilter : OrderAdvancedFilterBase
    {
        public override bool CanApply(string value) => !string.IsNullOrWhiteSpace(value);

        public override IQuerySpecification<OrderReadOnly> Apply(IQuerySpecification<OrderReadOnly> query, IOrderQuerySpecificationFactory @where, string value)
        {
            return query.And(where.HasProperty(new KeyValuePair<string, string>("billingTelephone", value), StringComparisonType.Contains));
        }
    }

And this is the composer

[ComposeAfter(typeof(VendrComposer))]
    public class VendrSearchFilterComposer : IUserComposer
    {
        public void Compose(Composition composition)
        {
            composition.WithCartAdvancedFilters().Append<OrderPhoneNumberFilter>();

        }

        public class VendrSearchFilterComponent : IComponent
        {
            public void Initialize()
            {

            }

            public void Terminate()
            {
            }
        }
    }

Umbraco 8.18.0

Vendr 2.1.1