How to report error about inner item value in list in Spring validator?

I have object that I want to validate using Spring Validator.

public record MyRequest(
List<@Valid Item> items,
//  ...
)

and Item:

public record Item(
String foo,
//  ...
)

Then I want to indicate that the third item has an invalid foo value.

I tried to use errors.rejectValue method with items[2].foo as fieldValue, but I get the following error:

Cannot retrieve value for field 'items[2].foo' - neither a getter method nor a raw field found