Tracy,

In this case code can be much shorter

oldval="RGB(0,0,0,255,255,255)"
lcStr = STREXTRACT(oldval, "(", ")")
lnPos = AT(",", lcStr,3)
? "RGB(" + SUBSTR(lcStr, lnPos + 1) + "," + LEFT(lcStr, lnPos-1) + ")"

>If I was an Ostrich, I'd stick my head in the sand right about now! :o) You are the first one to catch the obvious. I shouldn't be reversing the order at all, but switching the pairs as your example clearly does quite well. What was I thinking? (I obviously wasn't!) Thanks Steve!