>As a result of some processing I am getting a field with a value of ************* (numeric overflow)
>
>I'm not at all concerned (yet) with why this is happening (I'll fix that problem later).
>
>I want to do something like

>REPLACE field1 WITH IIF(field2 is numberic overflow, value1, value2)

>
>What expression can I use to determine when field2 is at numeric overflow
>
>Thanks to all................Rich

You can do something like this:

TRY
	REPLACE field1 WITH value2
CATCH TO loException WHEN loException.ErrorNo = 39
	REPLACE field1 WITH value1
ENDTRY

Can't think of a one-liner, also note that any other error will be raised normally

[Update]I updated the code a little bit to better reflect your case[/Update]