Oracle globalization

Hi

Is there someone who how oracle globalization for vb net works?
When the user will run my program, it will change automaticly his date format.

Here's my code


Dim oraglob As OracleGlobalization

oracleConnection.GetSessionInfo()
oraglob.DateFormat = "YYYY-MM-DD"
oracleConnection.SetSessionInfo(oraglob)

but that doesn't work, i always have the error message who says that oraglob is not reference as in object.

Is there someone who can help me with this?

Thanks