Bob & Randy,
Here's a sample code (not the actual one I'm using, but much more readable):

CREATE DATA datTest
CREATE TABLE tblTest (cKey C(1))
ALTER TABLE tblTest ADD PRIMARY KEY cKey TAG cKey FOR .NOT.EMPT(cKey)

Switching the order of the TAG/FOR clauses makes no difference.

>>Thanks, Bob...
>>Well, I've tried it both ways, and get a Syntax Error.
>>
>>>Change the sequence of your FOR and your TAG command. I think it works one way but not the other... but, I can't remember which you had to put first.
>
>Hmm... this is from the other forum I got this info from...
>
>***********
>This seems to indicate that you can programatically create a primary key with a filter...
>
> Yes, it does, doesn't it?
>
> I found out the problem. Both Anders Altberg and Doug Hennig clued me in to the fact that the docs are wrong: the FOR clause must appear before the TAG clause. It was wrong in both the VFP docs (no surprise) and the Hacker's Guide (a first!).
>**********
>
>Why don't you post your code here?
>
>BOb