I have four Combo Boxes:
Customers, Contacts, Project Managers, and Superintendents

The other three Combo Box values are based on what is selected in Customers
using a SQL statement.  For example The Contancts SQL statement is:

SELECT [Customer Contacts Table].CC_CustomerContactID, [Customer Contacts
Table].[CC_Contact Person], [Customer Contacts Table].CC_Company FROM
[Customer Contacts Table] WHERE ((([Customer Contacts
Table].CC_Company)=Forms![Job Work Order Form]!Customer)) ORDER BY [Customer
Contacts Table].[CC_Contact Person];

I know that I need code in the Customers Field.  This is what I have:

Private Sub Customer_AfterUpdate()
   Me.Contact_Person = Null
   Me.Contact_Person.Requery
   Me.Contact_Person = Null
End Sub

How can I alter the code to requery all three fields instead of just the
one?  I tried adding more After Event Codes using the other field names and
the computer exploded! :)