bash question w/ nested function definitions

I've created some function definitions thusly:

dfn.sh
Code: set -a
fcn1 () {
echo #1
}
fcn2 () {
echo #2
}
fcn3 () {
echo #3
}Then I issue:

main.sh
Code: . ./dfn.sh & wait $!
fcn1 | fcn2 | fcn3but I get "fcnx : command not found."

Thanks in advance for any insight you can provide.