Validate & select multiple

Validate & select multiple

Hello,

I have a select multiple with name "select_esp[]" but this code doesn't work...

  1. $("#form").validate({
  2.                                 rules:{
  3.                                        select_esp[]: "required"
  4.                                     },
  5.                                 messages:{
  6.                                         select_esp[]: "Select this"
  7.                                     }
  8.                             });
Do yo know how validate selects type "multiple"?

Thank you so much.