Validator of collection object

[bluepink116]

I have a class:
public class Customer { public string Name { get; set; } }
Validator is defined on the customer object:
public class CustomerValidator : AbstractValidator<Customer> { public CustomerValidator() { // rule is defined on name here. } } public class CustomerCollectionValidator : AbstractValidator<List<Customer>> { public CustomerCollectionValidator () { RuleForEach(x => x).SetValidator(new CustomerValidator ()); } }
EditForm is Model is set to the List object.

But this is throwing below error:
Could not find property named x on object of type List.

Any ways to solve this error?
Thanks