Transactions In Access XP

I am trying to run a transaction in my databases and I’m having problems with rollback. I have an append query and a delete query that I’m trying to run Just a test I begin the transaction, run the queries and then rollback the transaction. For some reason the rollback isn’t working. Please look at my code and let me know what I’m doing wrong. Are transactions not available in DAO? Also, how do you tell if all records were updated – How do you know when to Rollback?


Sub ArchiveRecords()
Dim db As DAO.Database
Dim qdfArchive As QueryDef
Dim qdfDel As QueryDef
Set db = CurrentDb
Set qdfArchive = db.QueryDefs("qry0201ArchiveLayoffs")
Dim cnn As Connection
Set cnn = CurrentProject.Connection
Set qdfDel = db.QueryDefs("qry0202DelArchiveLayoffs")
cnn.BeginTrans
qdfArchive.Parameters(0) = 1
qdfArchive.ExecuteqdfDel.Parameters(0) = 1
qdfDel.Execute
cnn.RollbackTrans
End Sub