MacOS, I’m trying to use a keyboard macro program called keyboard maestro that can send media keys to programs using AppleScript. It works on Spotify
tell application "spotify" playpause end tell
but if I try it on another obscure media player I want, or Google chrome to control youtube videos/youtube music
tell application "Headset" playpause end tell
tell application "Google Chrome" playpause end tell
They give macro failed errors with this in the log
2020-09-09 21:30:25 Execute an AppleScript failed with script error: text-script:25:38: execution error: The variable playpause is not defined. (-2753)
Media keys pressed from the keyboard do work on them, is there a way to find which commands will work on them to simulate the keys or they just don’t accept them this way via AppleScript?