How are [tblCustomerInfo Query] and tblCustomerInfo related ?
If by chance tblCustomerInfo Query].Auto_ID is a FK referencing tblCustomerInfo.Auto_ID, then try the following.
In the AfterUpdate event procedure of the Customer combo box :
Me!Customer_Contact.RowSource = "SELECT Auto_ID, fullname FROM [tblCustomerInfo Query] WHERE Auto_ID=" & Me!Customer.Auto_ID
Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886