Pass multiple criteria to ServicelookUP

[ameermicrocenter]

I have a ServiceLookup attribute applied to a field, which displays as a select box in the UI. When clicked, it fetches data from the backend. Here's the current setup:

    [ServiceLookupEditor(typeof(ProductCategoryAttachmentTypeRow),
    Service = "ProductCategory/ProductCategoryAttachmentType/List",
    FilterField = nameof(ProductCategoryAttachmentTypeRow.Fields.ProductCategoryId),
    IncludeColumns = ["AttachmentType", "AttachmentTypeId"],
    IdField = "AttachmentTypeId",
    TextField = "AttachmentType")]
    

I have already added a FilterField for ProductCategoryId, and it works fine. However, I need to add an additional condition to filter by AttachmentTypeIds—specifically, to include only a list of AttachmentTypeIds that I pass from the client side.

Alternatively, I'm open to filtering the data client-side after fetching, but I'm not sure how to do this as I can't find a suitable event in select2 to achieve that.

Can anyone provide guidance on how to add this additional filtering condition or suggest a method for client-side filtering with select2?