Thanks again Roy
I gave a big hurray because it worked and then I found my recordsets have disappeared. I can soon recreate then but it has happened several other times.
Just thought I would let you know.
Later:
I have the first field Manufacturer Validation showing correctly.
I then decided to validate the second field.
When I applied the validation to the Model Field in the Show Region IF it showed applying to manufacturer and I can see no way of changing this