How to use regular expression in subject name field in same code

Question

$(function () {

$("#course_outline").validate({

    rules: {

        ignore: [],

        errorClass: "",

        course_code: {required: true},

        subject_name: {required: true},

        time_allocation: {required: true},

        lecturer: {required: true},

        subject_status: {required: true},

        agree: "required"

    },

    messages: {

        course_code: {required: "Course Code Mandatory"},

        subject_name: {required: "Subject Name Is Mandatory"},

        time_allocation: {required: "Time  is mandatory" },

        lecturer: { required: "Lecturer is mandatory" },

        subject_status: {required: "Subject Status is mandatory"},

        agree: "policy are acccept"
    }
});

});

i don't know to how to use regular expression in same code anybody help me soon.

accept: "[a-zA-Z]+".This method also i use but not working my script.