I figured it out, had to do with the DELIMITED BY SIZE issue - the old buffer was overwriting the whole new one, thus nothing was ever being stored. I added a delimiter literal and it works now, code looks like this if interested (||||) is the delimiter: GetPayload. MOVE "||||" TO Payload. Move " " TO EditLine. PERFORM UNTIL EditLine = "." DISPLAY "> " WITH NO ADVANCING ACCEPT EditLine MOVE Payload TO PreviousPayload STRING PreviousPayload DELIMITED BY "||||" CRLF DELIMITED BY SIZE EditLine DELIMITED BY SIZE "||||" DELIMITED BY SIZE INTO NewPayload END-STRING MOVE NewPayload TO Payload END-PERFORM. DISPLAY "<EOT>". On 12 Sep 2012, at 16:35, Dennis Boone wrote: Nothing seems to happen, however. I assume you don't mean that literally. De