Conditionally referring to fields

Hi,
I am using RS 2000. In a report, I have database field whose name keeps changing everytime based on some condition. Say, a stored proc returns a field Aug2005. The name of this field becomes Oct2005 on some other condition. How can I use this field in the layout (to drag n drop). By what name/alias could I refer to this field. I read that in RS 2005 there is an option like Fields.Items(index).Value to access the field conditionally but I tried it in RS 2000 to no avail. Please suggest a solution.
Thanks,
Biju.

When you use the Fields.Items syntax, what you are varying is the field name, not the underlying database query column name (called DataField in RDL). All columns returned by the query must be known and mapped in the RDL.

If you have a query that returns different columns, you need to add them both to the query and then conditionally switch between them.