Import Environment Variables and add libraries at run time

How can I import environment from a file on disk? 
Environment.LoadFromFile "C:\Env.xml" 
Set qtApp = CreateObject("QuickTest.Application")   
Open the test using: 
qtApp.Open vDriverScriptDir + "\verify Login page"
Set qtTest = qtApp.Test 

Assigning values to environment variables: 
 qtTest.Environment.Value("TestExecResultsPath") = TestExecResultsPath
 qtTest.Environment.Value("strCompanyName") = strCompanyName
 qtTest.Environment.Value("strUserName") = strUserName
 qtTest.Environment.Value("strPassword") = strPassword


 ''Loading Environment Variables file
 qtTest.Environment.LoadFromFile vLibLocation + "EnvironVariables.XML",True 

Envi sml file content:
<Environment>
  <Variable>
    <Name>ScrDetailSheet</Name>
    <Value>ScreenDetails</Value>
  </Variable>
  <Variable>
    <Name>ObjDetailsSheet</Name>
    <Value>ObjDetails</Value>
  </Variable>
  <Variable>
    <Name>TestDataSheet</Name>
    <Value>TestData</Value>
  </Variable>
  <Variable>
    <Name>TestDataDetailSheet</Name>
    <Value>TestDataDetail</Value>
  </Variable>
  <Variable>
    <Name>AddlDetailsSheet</Name>
    <Value>AddlDetails</Value>
  </Variable>
</Environment>

The environment variable file must be an XML file using the following syntax:
› Syntax
› Environment.LoadFromFile(Path)
› Example:
›  Environment.LoadFromFile("C:\QuickTest\Files\MyVariables.xml")
›  Environment.LoadFromFile("C:\MyVariables.xml")
================================
'' Add / associate libraries with test:
 'Loading Necessary Libraries for the test
 Set qtLibraries = qtTest.Settings.Resources.Libraries 
 qtLibraries.RemoveAll
 qtLibraries.Add vLibLocation + "GlobalVariables.vbs", 1 ' Add the library to the collection
 qtLibraries.Add vLibLocation + "Config.vbs", 2
 qtLibraries.Add vLibLocation + "CommonLibrary.vbs", 3
 qtLibraries.Add vLibLocation + "GenericLib.vbs", 4
 qtLibraries.Add vLibLocation + "InsertsLibrary.vbs", 5