Forms :: Using One Dropdown List Box To Display A Selecting In Another Dropdown List Box?

I have a form where I have two drop down list box.The first list box is called Transaction_Type. It contains three values: Created, Allocated and Sold

The second list box is called Product_Status. It contains 6 items: Allocated, Produced, Reworked, Shipped, To Be Produced, Unallocated.

I have a products form. When a user created more inventory they will selected in the drop down list create, then a quantity. Then I would like the status of the product to update to "Unallocated".

When the user placed an order but doesn't finish it they will choose the status of the inventory to be allocated so I would like the product status to be updated to allocated automatically.

They other status the user will choose them self and do not need to be linked to each other.

In my vba code I have tried with the OnClick and AfterUpdate sub procedures with the following code.

If Me.Transaction_Type.Value = "Created" Then
Me.Product_Status.Value = "Unallocated"
End If
If Me.Transaction_Type.Value = "Allocated" Then
Me.Product_Status.Value = "Allocated"
End If

Yes when i select "created" from the drop down list it does not change product_status to say "unallocated"

(in using access 2007)