SqlTransaction Error Help

Hi,

I use  SqlTransaction to add record to the database. But I got a warning message on the "objTransact.Rollback()"  that said "Variable 'objTransact' is used before it has been assigned a value, A null reference exception could result at runtime".  what does this mean? how can I fix it? The following  is the code. Thanks.

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Dim objTransact As SqlTransaction

Try



objConnect.Open()



objTransact = objConnect.BeginTransaction()

cmd.Connection = objConnect

cmd.Transaction = objTransact

-----do some sql query here............

objTransact.Commit()





Catch objError As Exception





objTransact.Rollback()

Finally



objConnect.Close()





End Try