Hi Richard, I am really enjoying the tutorials. Thanks a lot for your approach; you made it very easy to understand.  I have question regarding adding/deleting a field from table that you shared in the Questions from Students video. After deleting it from the table and subsequently from the form, I still got the pop up window asking me to "enter parameter value CustomerT.FaxNumber." I clicked ok to get past it. When I viewed the "existing fields" list, it showed the FaxNumber field, but not within the CustomerT available fields. Would you please enlighten me on how to correct that?

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Reply from Alex Hedley:

Did you delete it from any Queries?
Or is the Form's RecordSource set to a SQL statement?