Setting Optionset as Text via Sdk.MetaData

Good afternoon,

I'm trying to combine SDK.REST.retrieverecord to retrieve records from a related entity, AND using SDK.MetaData to change the optionset values to text.

I'm new to Javascript and am confused about how to combine the retrieved value from Sdk.REST and the optionset text with SDK.MetaData.

See code below:

function test() {

var contact = Xrm.Page.getControl("header_process_parentcontactid").getAttribute().getValue();

SDK.REST.retrieveRecord(
contact[0].id,
"Contact",
"JobTitle,EMailAddress1,FirstName,FullName,LastName,MobilePhone,new_BusinessFunction,new_SeniorityLevel,Telephone1",
null,
function (result) {
var eMailAddress1 = result.EMailAddress1;
var firstName = result.FirstName;
var fullName = result.FullName;
var jobTitle = result.JobTitle;
var lastName = result.LastName;
var mobilePhone = result.MobilePhone;
var new_BusinessFunction = result.new_BusinessFunction;
var new_SeniorityLevel = result.new_SeniorityLevel;
var telephone1 = result.Telephone1;
Xrm.Page.getAttribute("fullname").setValue(fullName);
Xrm.Page.getAttribute("firstname").setValue(firstName);
Xrm.Page.getAttribute("emailaddress1").setValue(eMailAddress1);
Xrm.Page.getAttribute("jobtitle").setValue(jobTitle);
Xrm.Page.getAttribute("lastname").setValue(lastName);
Xrm.Page.getAttribute("mobilephone").setValue(mobilePhone);
Xrm.Page.getAttribute("telephone1").setValue(telephone1);
},
 function (error) {
 alert(error.message);
 }
 );
}

function ptest() {

var languageArray = [];

// this.RetrieveAttribute = function (EntityLogicalName, AttributeLogicalName, MetadataId, RetrieveAsIfPublished, successCallBack, errorCallBack, passThroughObject

 SDK.Metadata.RetrieveAttribute("contact", "new_BusinessFunction", null, true, function (result) {

for (var i = 0; i < result.OptionSet.Options.length; i++) {

 languageArray[result.OptionSet.Options[i].Value] = result.OptionSet.Options[i].Label.LocalizedLabels[0].Label;

 }

 },

 function (error) {

 alert(error.message);

 }

 );

}

I need to set the optionset value of new_BusinessFunction as text on the Lead Form.

Using Dynamics 365 online.

Thanks in advance.