I used Dan’s suggested
L = thisComp.layer(“Null 1”);
L.toWorld(L.anchorPoint)
with no joy. (Well, it shifted the camera way off axis and nowhere near the parented null) Then I found on another site that copying and pasting direct from a website can have peculiar results and it suggested I use something like TextEdit or SimpleText first.
Viola! Worked just as Dan said it would.
Now you know.