How to get Business Object values in page?

Summary

How to get Business Object values in page?

Content

Hi,

I have busniess object that contains employee details.I added a button in page design and I need to get employee name (firstName) to be shown in alert message when i click button.

I've tried this sample code to read values but without condition. I just need to get the firstname value in alert message when i click button. But alert message displays as[object Object].

require([ 'operation/js/api/Conditions', 'operation/js/api/Operator' ],

function(Conditions, Operator)

{

var employee = Abcs.Entities().findById('EmployeeDetails');

var firstName = employee.getProperty('firstName'