Hi Barry,
no no... the field name it's ok.

On the doc I've not found any sample..
I've this with "this" and "this.value".. :-)
but not with che column name.. :-)

Code:
(keylookup("categories", "CATEGORYID", products.categoryid, true, false))
Work fine!

sorry for the mistakes.

the next week I'm back to Bologna.. my Lasagna is waiting for you.

Fabio