How to create a one more number field for the incident table

[Venky Kshatriy2]

Present i am using the after BR 

(function executeRule(current, previous /*null when async*/) {

var RefNumber = "";

    var userGR = new GlideRecord('incident');

    userGR.addQuery('u_ref_no', 'STARTSWITH', 'GH');

    userGR.orderByDesc('u_ref_no');

    userGR.setLimit(1);

    userGR.query();

    if (userGR.next()) {

        RefNumber = userGR.getValue('u_ref_no');

        var numericPart = RefNumber.replace(/[^0-9]/g, '');

        //gs.addInfoMessage(numericPart);

        var nextNumericPart = parseInt(numericPart) + 1;

        //gs.addInfoMessage(nextNumericPart);

        var nextEmployeeNumber = "GH" + nextNumericPart;

        current.u_ref_no = nextEmployeeNumber;

        current.update();

    }

})(current, previous);

[Anurag Tripathi]

You can refer to this to learn how to create a number field. It doesn't require any scripting and you should use the Number Maintenance table

How To Create An Auto Number Field In ServiceNow - YouTube

But I'd like to ask what is the requirement here? What are you trying to achieve?

[Venky Kshatriy2]

Already one number field is there need to create one more number field (REF no)

[Anurag Tripathi]

You can still use the number maintaincence

[Ankur Bawiskar]

@Venky Kshatriy2 

what's the business requirement to hold number?