putting message back together

Remove the ^ from the join command.

set newLocation [join “$floor $room $bed” $subSep]

use lreplace

set newpv1list [lreplace $PV1List $PV1location $PV1location $newLocation]

rebuild PV1 segment

set newpv1 [join $newpv1list $fldSep]

Replace old pv1 with new

set newseglist [lreplace $segList PV1pos $PV1pos $newpv1]

set msg [join $newseglist r]

I think I have all the pieces….In essence, oyu need to build and replace in the opposite order you disassembled…..Hope this helps…