Dumb Question - Why doesn't this work?

[Teferi]

HP=594/MA=376]:greet PTERY
greet ANGRUIN

Bank of Godfrey
Also here: PTERY, ANGRUIN, ZzZ, TwoGirlz, Pedro, WombShifta, Edge, Skuz,
Meatybone, CORNELLIAN, Mersinary.
Obvious exits: north, east, closed gate west
[HP=594/MA=376]:greet Pedro

Bank of Godfrey
Also here: PTERY, ANGRUIN, ZzZ, TwoGirlz, Pedro, WombShifta, Edge, Skuz,
Meatybone, CORNELLIAN, Mersinary.
Obvious exits: north, east, closed gate west
[HP=594/MA=376]:greet CORNELLIAN

Bank of Godfrey
Also here: PTERY, ANGRUIN, ZzZ, TwoGirlz, Pedro, WombShifta, Edge, Skuz,
Meatybone, CORNELLIAN, Mersinary.
Obvious exits: north, east, closed gate west
[HP=594/MA=376]:greet Mersinary

Bank of Godfrey
Also here: PTERY, ANGRUIN, ZzZ, TwoGirlz, Pedro, WombShifta, Edge, Skuz,
Meatybone, CORNELLIAN, Mersinary.
Obvious exits: north, east, closed gate west

[Gardner Denver]

The coding to use that command on players is either not in place or not working properly.  Works fine on monsters.

[Stalkerr]

The coding to use that command on players is either not in place or not working properly.  Works fine on monsters.

When you type any command it should always end up testing the action list if the command fails.

The greet action doesnt have any monster or item interaction,
greet   You greet everyone.   %s greets everyone.   You greet %s.   %s greets you.   %s greets %s.

unlike a full action that might look like this.
bleed   You bleed all over the place!   %s is bleeding all over the place!   You bleed all over %s!   %s is bleeding all over you!   %s is bleeding all over %s!   You bleed all over %s!   %s is bleeding all over %s!   You bleed all over your %s!   %s is bleeding all over %s %s!   You bleed all over the %s!   %s bleeds all over the %s!

[Gardner Denver]

The greet action doesnt have any monster or item interaction,

This statement is false.  Greet does have monster interaction in MMud.