How to autopopulate the created scenario plan name in the scenario plan field after submission of RP

[Priyapatnayak]

I can able to create a scenario plan after submission of record producer form. But in the task record I am unable to see the autopopulation of scenario plan field with the scenario plan name. I have used script include + written code in record producer directly, I am posting my code here. can someone please help me out to find the exact mistake in my code. 

script include:

var scenario_plan_creation = Class.create();

scenario_plan_creation.prototype = {

    initialize: function() {

    },

    create_Scenario_Plan: function()

    {

        // Create a new scenario plan record in the custom table

        var scenarioPlanGR = new GlideRecord('sn_wsd_spcmgmt_scenario_plan');

        scenarioPlanGR.initialize();

        scenarioPlanGR.name = producer.request_name;

        scenarioPlanGR.group_by = producer.department_name;

        scenarioPlanGR.location = producer.building_name;

        scenarioPlanGR.insert();

        var scenarioPlan_name = current.name;

        gs.info("priyanka" +scenarioPlan_name);

        return scenarioPlanGR.sys_id;

    },

};

Record producer code:

new global.scenario_plan_creation().create_Scenario_Plan(producer);

current.scenario_plan = scenarioPlanGR;