Access 2013 ComboBox value based on other ComboBox with Junction Table - sql

Question

Good day. This is a follow-up to a previous question. I have a form with 2 comboboxes where the 2nd one depends on the value in the 1st one. I have the code to show the drop down list in the 2nd combobox but I am unable to select anything but the first entry.
Table 1: name - Supply_Sources, fields - Source_ID(pk), SupplySourceName
Table 2: name - Warehouse_Locations, fields - WLocation_ID(pk), Location_Name
Table 3 (junction): name - SupplySource_WarehouseLocation, fields - Supply_Source_ID(pk), Location_In_ID(pk)
On my form 'frmInventoryReceivedInput' I have cboSupplySource and cboWLocation. I populate cboSupplySource with
SELECT [Supply_Sources].[Source_ID], [Supply_Sources].[SupplySourceName]
FROM Supply_Sources;
The SQL for cboWLocation is:
SELECT SupplySource_WarehouseLocation.Supply_Source_ID,
Warehouse_Locations.Location_Name FROM Warehouse_Locations
INNER JOIN (Supply_Sources INNER JOIN SupplySource_WarehouseLocation
ON Supply_Sources.Source_ID = SupplySource_WarehouseLocation.Supply_Source_ID)
ON Warehouse_Locations.WLocation_ID = SupplySource_WarehouseLocation.Location_In_ID
WHERE ((( SupplySource_WarehouseLocation.Supply_Source_ID)=
[forms]![frmInventoryReceivedInput]![cboSupplySource]));
There are 3 options for me in the cboWLocation drop down list (based on cboSupplySource). However, it doesn't matter which one I choose, it defaults to the first one. What do I need to do to be able to choose the other options?

Answer 1

I recreated it and it works OK, the only thing I did differently was create a query with the SQL:
SELECT
SupplySource_WarehouseLocation.Supply_Source_ID, Warehouse_Locations.Location_Name
FROM
Warehouse_Locations INNER JOIN
(Supply_Sources INNER JOIN
SupplySource_WarehouseLocation ON
Supply_Sources.Source_ID = SupplySource_WarehouseLocation.Supply_Source_ID) ON
Warehouse_Locations.WLocation_ID = SupplySource_WarehouseLocation.Location_In_ID
WHERE
(((SupplySource_WarehouseLocation.Supply_Source_ID)=
[forms]![frmInventoryReceivedInput]![cboSupplySource]));
so I could check that part separately from the UI.
For cboWLocation, I have column widths 0";1", rowSource qry_cbo2, and bound column 2. Try changing your bound column from 1 to 2 and see if that helps.
-Beth