My byond version 4.12 works (if thats the current version, but not really the problem)

I go in a game and try to set up combo macros.
Which worked in the 3.5 byond and a example is like.

Rest\nsave

doing that would allow me to hit one button and do both things at once, ezing I guess you'd call it.

but 4.12 doesn't let me do it, or maybe its changed?
I just wanted to know if I'm doing it wrong or they took out that option all together.
Thanks.