QuickTest Professional 9.0 does not support dynamically 
loading object repositories at runtime. AOM (Automation 
Object Model) statements are not designed to be executed 
from within a test script.

QuickTest Professional 9.0 does allow you to associate and 
load (not at runtime) multiple Object Repository files.

-Atin Srivastava

Use the Automation Object Model to specify the path to a 
Object Repository: 
Dim App 'As Application 
Set App = CreateObject("QuickTest.Application")
App.Test.Settings.Resources.ObjectRepositoryPath 
= "<PathToYourObjectRepositoryFileHere>"

To be more simple 
go with this 

RepositoriesCollection.Add " .tsr File path "

Hi We can call the TSR file in runtime and in 8.2 and 9.0 
also.

How means.. i am giving one function

Public Function UDF_ORUpdate(g_ActName,sv_qtFileName)
    Dim qtApp
    Dim qtRepositories
    Set qtApp = CreateObject("QuickTest.Application") 
    Set qtRepositories = qtApp.Test.Actions
(g_ActName).ObjectRepositories
    qtRepositories.removeall
    qtRepositories.Add sv_qtFileName

End Function

hi krishna,

LOADING OBJECT REPOSITY AT RUN TIME U WROTE SMALL FUNCTION
IN THAT U MENTIONED OBJECT  .

CAN YOU PLZ EXPLAIN HOW THAT OBJECT WORK COMPLETELY 

REGARDS
SARI