I am working up a method to set the primary key property on a field.
I am using SQL to do this, as it seems the only way.

I have working code, but - I noticed if I try to apply the primary key 
property a second time I get a runtime error either 43 or 44 with the 
message : Failed to execute ALTER TABLE command.

So... naturally I setup an ON ERR CALL method to catch and report the 
problem. However, the error call routine does NOT get either error 43 
nor 44, it gets error -1!.

If I remove the ON ERR CALL and generate the error, I get a 4D runtime 
error dialog  with error 43 or 44, install ON ERR CALL and get error -1.

Any insights?

Thanks
Chip
---------------
Gas is for washing parts
Alcohol is for drinkin'
Nitromethane is for racing 
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