Hi Mike,

Following code should give you a good starting point

lcStr = "ISA*00*00*ZZ*TEST^"
lcDelim = "*"
lnItem = 3
lnP1 = AT(lcDelim, lcStr, lnItem) + 1
lnP2 = AT(lcDelim, lcStr, lnItem+1) - 1
? STUFF(lcStr, lnP1, lnP2-lnP1+1, "AA")
? STUFF(lcStr, lnP1, lnP2-lnP1+1, "ABCD")

>
>I'm doing a some EDI work these days. I have a need to replace certain fields in certain lines. STREXTRACT is pretty good for providing the content of the 6th "delimited" section of an edi string, but there doesn't appear to be a similar function to overwrite or replace the 6th delimited section. Seems like both sides of a problem rarely get addressed. If you build a seek, do you not need a replace? ;)
>
>I didn't see anything similar on the wiki or in the downloads.
>
>Before I go and write such a function, does anyone already have one?
>
>Thanks