client script auto fill variable value email

[Jeff W NZAO B]

Hello,

Please i want to auto fill a variable field which is a single line text depending on a referenced variable field. I created a script include and then a client script. 

script include:

getFunctionEmail: function() {
        try {


            var varBeneficiary = this.getParameter('sysparm_userid');

            var grUser = new GlideRecord('sys_user');
            if (grUser.get(varBeneficiary)) {
                var json = new JSON();
                return json.encode(grUser.getDisplayValue('email'));
            }
        } catch (e) {}
    }

client script :

function onChange(control, oldValue, newValue, isLoading) {
   if (isLoading || newValue == '') {
      return;
   }
	
	var ga = new GlideAjax('IncludeName');
		ga.addParam('sysparm_name', 'getFunctionEmail');
		ga.addParam('sysparm_userid', newValue.toString());
		ga.getXML(populateEmail);
  
	function populateEmail(response) {
		 
		  var answer = response.responseXML.documentElement.getAttribute("answer");
	

			
			g_form.setValue("mail_beneficiary", answer.toString().replace(/['"]+/g, ''));
			
		   
	}

	
}

[Sandeep Rajput]

@Jeff W NZAO B Please update your script include method as follows and see if it works.

getFunctionEmail: function() {
        try {
            var varBeneficiary = this.getParameter('sysparm_userid');
            var grUser = new GlideRecord('sys_user');
            if (grUser.get(varBeneficiary)) {               
                return grUser.getValue('email');
            }
        } catch (e) {}
    }