Function parameter passing as empty while calling the script include function in reference Qualifier

[K Sai Krishna]

1st field is of type reference -> name_of_application_service

2nd  field type is of list collector where I have applied the reference qualifier ->

javascript: new CIvalueretrieve().getCis(current.variables.name_of_application_service);

In the below script include log statement parentIdValue is coming as empty.

Script include : 

var CIvalueretrieve = Class.create();

CIvalueretrieve.prototype = {

    initialize: function() {},

    getCis: function(parentId) {

var parentIdValue =parentId.toString();

gs.log("parentId testing"+ parentIdValue);

        var relations = new GlideRecord('cmdb_rel_ci');

        relations.addQuery('parent',parentIdValue);

        relations.query();

        var ciData = [];

        while (relations.next()) {

            var cis = new GlideRecord('cmdb_ci');

            cis.addEncodedQuery('sys_class_name=cmdb_ci_win_server^ORsys_class_name=cmdb_ci_linux_server^nameISNOTEMPTY^install_statusIN1,0,4');

            cis.addQuery('sys_id', relations.child.sys_id);

            cis.query();

            if (cis.next()) {

                ciData.push(cis.getUniqueValue());

            }

        }

        var strQuery = new ArrayUtil().unique(ciData);

        return "sys_idIN" + strQuery;

    },

    type: 'CIvalueretrieve'

};