[jQuery] [validate] custom error messages

[Jaggi]

been bashing my head with this one all day and can't seem to get it to
display my custom error messages, any help would be great.

$("#offer").validate({
        messages: {
                seasons: {
                        required: 'Please select at least one season',
                        minlength: 'test'
                }
        },
        rules: {
                /* Seasons */
                seasons: {
                        required: true,
                        minlength: 1
                }
        }
});