Servicenow

[HARSHA GOWDA R]

Can anyone help me with this code , Below i attached 2 files .So if i select the date for example from 02-01-2024(effective date) to 12-01-2024(effective date) so in the end point its triggering with same year but with diff date and month , can anyone look at the script and files and guide where i went wrong?
Onchange Script

function onChange(control, oldValue, newValue, isLoading) {

    if (isLoading || newValue == '') {

        return;

    }

    var ga = new GlideAjax('iamServiceAccountOnboardingUtils'); //scriptinclude name

 ga.addParam('sysparm_name', 'calculateEndDate'); //function name

 ga.addParam('sysparm_effective_date', newValue);

 ga.getXML(answerCallback); // Define the callback function

 }

 function answerCallback(response) {

     var answer = response.responseXML.documentElement.getAttribute("answer");

     if (answer) {

         // Set the calculated end date in the end date field

         g_form.setValue('end_date', answer);

     }

 }

Script Include

var iamServiceAccountOnboardingUtils = Class.create();

iamServiceAccountOnboardingUtils.prototype = Object.extendsObject(global.AbstractAjaxProcessor, {

    calculateEndDate: function() {

        var effectiveDate = this.getParameter('sysparm_effective_date');

        var endDate = new GlideDateTime(effectiveDate);

        endDate.getDate().getByFormat("dd-MM-yyyy");

        endDate.addYearsLocalTime(1);

        return endDate.getValue();

    },

 type: 'iamServiceAccountOnboardingUtils'

});

[Oya Orhan]

What is the last state of the issue?