GlideList not editable after writing code in calculated field

[sanasayyad]

This code is working properly , i want to ask an alternative i.e  after writing script is there any possible way to edit the Glidelist ?

(function calculatedFieldValue(current) {

    var userList = [];

   var id = current.sys_id;

    var gr = new GlideRecord('sn_install_base_sold_product_related_party');

    gr.addEncodedQuery('sold_product=' +id);

    gr.query();

    while (gr.next()) {

        if (gr.contact) {

            userList.push(gr.contact.getDisplayValue());

        }

    }

    return userList.join(',');

})(current);

[Mark Manders]

You could just make it a before insert BR to fill it by default so you can change it after it is initially set.